When the second derivative is negative, the function is concave downward. And the inflection point is where it goes from concave upward to concave downward (or vice versa). And 30x + 4 is negative up to x = …Find step-by-step Calculus solutions and your answer to the following textbook question: Determine where the given function is increasing and decreasing and where its graph is concave upward and concave downward. Sketch the graph of the function. Show as many key features as possible (high and low points, points of inflection, vertical and horizontal …Mar 4, 2018 ... intervals where the function is concave up and concave down ... Using the First and Second Derivatives to Graph Function ... Given fx sketch the ...Find the intervals on which the graph of f is concave upward, the intervals on which the graph of f is concave downward, and the inflection points f(x)=-x6 + 42x5-42x + 2 For what interval(s) of x is the graph of f concave upward? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. O B.Key Concepts. Concavity describes the shape of the curve. If the average rates are increasing on an interval then the function is concave up and if the average rates are decreasing on an interval then the function is concave down on the interval. A function has an inflection point when it switches from concave down to concave up or visa versa.The major difference between concave and convex lenses lies in the fact that concave lenses are thicker at the edges and convex lenses are thicker in the middle. These distinctions...2. I'm looking for a concave down increasing -function, see the image in the right lower corner. Basically I need a function f(x) which will rise slower as x is increasing. The x will be in range of [0.10 .. 10], so f(2x) < 2*f(x) is true. Also if. I would also like to have some constants which can change the way/speed the function is concaving.Find the intervals on which the graph of f is concave upward, the intervals on which the graph of f is concave downward, and the inflection points f(x)=-x6 + 42x5-42x + 2 For what interval(s) of x is the graph of f concave upward? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. O B.Looking for a deal on a vehicle? Used cars are going down in price. A recent report reveals vehicles with the biggest price decreases. After a pandemic-fueled spike in prices, what...The term concave down is sometimes used as a synonym for concave function. However, the usual distinction between the two is that “concave down” refers to the shape of a graph, or part of a graph. While some functions can have parts that are concave up and other parts that are concave down, a concave function is concave up for its entire domain. ...Are you in need of graph paper for your math assignments or engineering projects? Look no further. In this ultimate guide, we will explore the world of free graph paper templates t...The key features of this section are applying language and notation to the slope of a graph AND to the slope-of-the-slope of a graph. When it comes to the slope of a graph, we are most interested in where the slope is positive, negative, or zero. These slopes indicate that the graph is increasing, decreasing, or neither. The graph of a function f is concave down when f ′ is decreasing. That means as one looks at a concave down graph from left to right, the slopes of the tangent lines will be decreasing. Consider Figure 3.4.1 (b), where a concave down graph is shown along with some tangent lines. The graph of a function \(f\) is concave down when \(\fp \)is decreasing. That means as one looks at a concave down graph from left to right, the slopes of the tangent lines will be decreasing. Consider Figure 3.4.3, where a concave down graph is shown along with some tangent lines. Notice how the tangent line on the left is steep, upward ...The point at (negative 1, 0.7), where the graph changes from moving downward with increasing steepness to downward with decreasing steepness is the inflection point. The part of the curve to the left of this point is concave down, where the curve moves upward with decreasing steepness then downward with increasing steepness.Step 4: By the concavity test, () is concave up in (,) (,) and () is concave down in (,) Points of Inflection If the graph of a continuous function has a tangent line at a point where its concavity changes from upward to downward (or downward to upward), then the point is a point of inflection.Step 1. Suppose that the graph below is the graph of f' (x), the derivative of f (x). Find the open intervals where the original function is concave upward or concave downward. Find any inflection points. Select the correct choice below and fill in any answer boxes within your choice. f' (x)= -X-15x O A. The original function has an inflection ...Oct 30, 2023 · Preview Activity 4.2.1 4.2. 1. The position of a car driving along a straight road at time t t in minutes is given by the function y = s(t) y = s ( t) that is pictured in Figure 1.26. The car’s position function has units measured in thousands of feet. For instance, the point (2, 4) on the graph indicates that after 2 minutes, the car has ... It's easy to see that f″ is negative for x<1 and positive for x>1 , so our curve is concave down for x<1 and concave up for x>1 , and thus there is a point of ...Sep 13, 2020 ... Comments11 · Sketch the Graph the Function using Information about the First and Second Derivatives · Concavity, Inflection Points, Increasing ....concave down if \(f\) is differentiable over an interval \(I\) and \(f'\) is decreasing over \(I\), then \(f\) is concave down over \(I\) concave up if \(f\) is differentiable over an interval \(I\) and \(f'\) is increasing over \(I\), then \(f\) is concave up over \(I\) concavity the upward or downward curve of the graph of a function ...Step 4: By the concavity test, () is concave up in (,) (,) and () is concave down in (,) Points of Inflection If the graph of a continuous function has a tangent line at a point where its concavity changes from upward to downward (or downward to upward), then the point is a point of inflection. Concave-Up & Concave-Down: the Role of \(a\) Given a parabola \(y=ax^2+bx+c\), depending on the sign of \(a\), the \(x^2\) coefficient, it will either be concave-up or concave-down: \(a>0\): the parabola will be concave-up \(a<0\): the parabola will be concave-down Concave-Up & Concave-Down: the Role of \(a\) Given a parabola \(y=ax^2+bx+c\), depending on the sign of \(a\), the \(x^2\) coefficient, it will either be concave-up or concave-down: \(a>0\): the parabola will be concave-up \(a<0\): the parabola will be concave-downThe graph of a function f is concave down when f ′ is decreasing. That means as one looks at a concave down graph from left to right, the slopes of the tangent lines will be decreasing. Consider Figure 3.4.1 (b), where a concave down graph is shown along with some tangent lines.Anyway here is how to find concavity without calculus. Step 1: Given f (x), find f (a), f (b), f (c), for x= a, b and c, where a < c < b. Where a and b are the points of interest. C is just any convenient point in between them. Step 2: Find the equation of the line that connects the points found for a and b. Calculus. Find the Concavity f (x)=x^3-12x+3. f (x) = x3 − 12x + 3 f ( x) = x 3 - 12 x + 3. Find the x x values where the second derivative is equal to 0 0. Tap for more steps... x = 0 x = 0. The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the ... From the table, we see that f has a local maximum at x = − 1 and a local minimum at x = 1. Evaluating f(x) at those two points, we find that the local maximum value is f( − 1) = 4 and the local minimum value is f(1) = 0. Step 6: The second derivative of f is. f ″ (x) = 6x. The second derivative is zero at x = 0.concave down if \(f\) is differentiable over an interval \(I\) and \(f′\) is decreasing over \(I\), then \(f\) is concave down over \(I\) concave up if \(f\) is differentiable over an interval \(I\) and \(f′\) is increasing over \(I\), then \(f\) is concave up over \(I\) concavity the upward or downward curve of the graph of a function ...Question: You are given the graph of a function f. (i) Determine the intervals where the graph of f is concave upward and where it is concave downward. (Enter your answers using interval notation.) concave upward concave downward Find the inflection point of f, if any. (If an answer does not exist, enter DNE.) (x,y)= (×) There are 2 steps to ...The function y = f (x) is called convex downward (or concave upward) if for any two points x1 and x2 in [a, b], the following inequality holds: If this inequality is strict for any x1, x2 ∈ [a, b], such that x1 ≠ x2, then the function f (x) is called strictly convex downward on the interval [a, b]. Similarly, we define a concave function. Math. Calculus. Calculus questions and answers. Identify the open intervals on which the graph of the function is concave upward or concave downward. Assume that the graph extends past what is shown. Note: Use the letter U for union. To enter ∞, type infinity. Enter your answers to the nearest integer. If the function is never concave upward ... Solution. For problems 3 – 8 answer each of the following. Determine a list of possible inflection points for the function. Determine the intervals on which the function is concave up and concave down. Determine the inflection points of the function. f (x) = 12+6x2 −x3 f ( x) = 12 + 6 x 2 − x 3 Solution. g(z) = z4 −12z3+84z+4 g ( z) = z ... A downwards parabola, also known as a concave-down parabola, is a type of graph that represents a quadratic equation in the form of y = ax^2 + bx + c, where “a” is a negative constant. The graph of a downwards parabola opens downwards, forming a U-shaped curve. The vertex of a downwards parabola represents the lowest point on the graph ... Concave mirrors are used in car headlights, flashlights, telescopes, microscopes, satellite dishes and camera flashes. Dentists and ear, nose and throat doctors use concave mirrors...Recall the concavity test. - If g ′′ (x) > 0 on an interval I, then the graph of g is concave upward on I. - If g ′′ (x) < 0 on an interval I, then the graph of g is concave downward on I. Therefore, in order to determine concavity we must first find g ′′ (x). Since g ′ (x) = 24 x 2 + 4 x 3, then g ′′ (x) =For $$$ x\lt0 $$$, $$$ f^{\prime\prime}(x)=6x\lt0 $$$ and the curve is concave down. For $$$ x\gt0 $$$, $$$ f^{\prime\prime}(x)=6x\gt0 $$$ and the curve is concave up. This confirms that $$$ x=0 $$$ is an inflection point where the concavity changes from down to up. Concavity. Concavity describes the shape of the curve of a function and how it ...Second Derivative and Concavity. Graphically, a function is concave up if its graph is curved with the opening upward (Figure \(\PageIndex{1a}\)). Similarly, a function is concave down if its graph opens downward (Figure \(\PageIndex{1b}\)).. Figure \(\PageIndex{1}\) This figure shows the concavity of a function at several points.Learning Objectives. Explain how the sign of the first derivative affects the shape of a function’s graph. State the first derivative test for critical points. Use concavity and inflection points to explain how the sign of the second derivative affects the shape of a function’s graph. Explain the concavity test for a function over an open ... A downwards parabola, also known as a concave-down parabola, is a type of graph that represents a quadratic equation in the form of y = ax^2 + bx + c, where “a” is a negative constant. The graph of a downwards parabola opens downwards, forming a U-shaped curve. The vertex of a downwards parabola represents the lowest point on the graph ... Graphs are essential tools that help us visualize data and information. They enable us to see trends, patterns, and relationships that might not be apparent from looking at raw dat...Figure 9.32: Graphing the parametric equations in Example 9.3.4 to demonstrate concavity. The graph of the parametric functions is concave up when \(\frac{d^2y}{dx^2} > 0\) and concave down when \(\frac{d^2y}{dx^2} <0\). We determine the intervals when the second derivative is greater/less than 0 by first finding when it is 0 or undefined.is concave upward or downward. Let f be a function whose second derivative exists on an open interval I. Test For Concavity: 1. If f''(x) > 0 for all x in I, then the graph of f is concave upward on I. 2. If f''(x) < 0 for all x in I, then the graph of f is concave downward on I.Then "slide" between a and b using a value t (which is from 0 to 1): x = ta + (1−t)b. When t=0 we get x = 0a+1b = b. When t=1 we get x = 1a+0b = a. When t is between 0 and 1 we get values between a and b. Now work out the heights at that x-value: When x = ta + (1−t)b: …The graph of a concave function is a curve that is bowed downward, and it looks like a frown. For example, the function f(x) = -x^2 is a concave function because its second derivative is -2, which is negative. Calculus. Find the Concavity f (x)=x^3-12x+3. f (x) = x3 − 12x + 3 f ( x) = x 3 - 12 x + 3. Find the x x values where the second derivative is equal to 0 0. Tap for more steps... x = 0 x = 0. The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the ... On graph A, if you draw a tangent any where, the entire curve will lie above this tangent. Such a curve is called a concave upwards curve. For graph B, the entire curve will lie below any tangent drawn to itself. Such a curve is called a concave downwards curve. The concavity’s nature can of course be restricted to particular intervals.Sign of second derivative gives information about concavity: positive second derivative means concave up, negative means concave down. ... graph is concave down ...The key features of this section are applying language and notation to the slope of a graph AND to the slope-of-the-slope of a graph. When it comes to the slope of a graph, we are most interested in where the slope is positive, negative, or zero. These slopes indicate that the graph is increasing, decreasing, or neither.Similarly, a function is concave down if its graph opens downward (Figure 2.6.1b ). Figure 2.6.1. This figure shows the concavity of a function at several points. Notice that a function can be concave up regardless of whether it is increasing or decreasing.Step 1. The question is based on plot of graph. Select the graph which satisfies all of the given conditions. Justify your answer in terms of derivatives and concavity information below. You should explain why the graph you chose is correct as opposed to a solution by eliminating options. Specifically, your explanation should be a guide for how ...Concave downward: $\left(-\infty, -\sqrt{\dfrac{3}{2}}\right)$ and $\left(1,\sqrt{\dfrac{3}{2}}\right)$; Concave upward: $\left(-\sqrt{\dfrac{3}{2}}, -1\right)$ …Example 3.5.1: curve sketching. Use Key Idea 4 to sketch f(x) = 3x3 − 10x2 + 7x + 5. Solution. The domain of f is the entire real line; there are no values x for which f(x) is not defined. Find the critical values of f. We compute f ′ (x) = 9x2 − 20x + 7. Use the Quadratic Formula to find the roots of f ′:Jun 12, 2020 ... Determine the Open t-intervals where the Graph is Concave up or Down: x = sin(t), y = cos(t) If you enjoyed this video please consider ...(a) At what values of x does this function have local maximum values? (b) On what intervals is the function concave upward (c) Use a graph to solve the following equation correct to decimal places si -02 19-20 Lat (x) - Crude, where is the function whose graph is shown (a) At what values of x do the local maximum and minimum values of occurKey Concepts. Concavity describes the shape of the curve. If the average rates are increasing on an interval then the function is concave up and if the average rates are decreasing on an interval then the function is concave … For a quadratic function f (x)=ax^2+bx+c, if a>0, then f is concave upward everywhere, if a<0, then f is concave downward everywhere. Wataru · 6 · Sep 21 2014. Step 1. The graph is given. Identify the open intervals on which the graph of the function is concave upward or concave downward. Assume that the graph extends past what is shown. 101 8 ud 4 2 -10-8 -6 -4 -20 2 02 10 -2- X -4- -6 -8- 10- Note: Use the letter U for union. To enter , type infinity.Concave Down. A graph or part of a graph which looks like an upside-down bowl or part of an upside-down bowl. See also. Concave up, concave : this page updated ...Solution. For problems 3 – 8 answer each of the following. Determine a list of possible inflection points for the function. Determine the intervals on which the function is concave up and concave down. Determine the inflection points of the function. f (x) = 12+6x2 −x3 f ( x) = 12 + 6 x 2 − x 3 Solution. g(z) = z4 −12z3+84z+4 g ( z) = z ...Sep 28, 2016 ... ... Curve Sketching With Derivatives: https ... Curve Sketching - First & Second ... Increasing/Decreasing, Concave Up/Down, Inflection Points.In this section, we also see how the second derivative provides information about the shape of a graph by describing whether the graph of a function curves upward or curves downward. Increasing/Decreasing FunctionsExcel is a powerful tool that allows users to organize and analyze data in various ways. One of the most popular features of Excel is its ability to create graphs and charts. Graph...Find the intervals on which the graph of f is concave upward, the intervals on which the graph of f is concave downward and the inflection points. f (x) = ln (x 2 − 4 x + 29) For what interval(s) of x is the graph of f concave upward? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A.This problem has been solved! You'll get a detailed solution that helps you learn core concepts. Question: Determine the intervals of concavity for the graph of the function f (x)=xex. (Enter your answers using interval notation.) concave upward concave downward. Determine the intervals of concavity for the graph of the function f ( x) = x e ...f is concave up. b) If, at every point a in I, the graph of y f x always lies below the tangent line at a, we say that-f is concave down. (See figure 3.1). Proposition 3.4 a) If f is always positive in the interval I, then f is concave up in that interval. b) If f is always negative in the interval I, then f is concave down in that interval.Consider the following graph. Step 1 of 2: Determine the intervals on which the function is concave upward and concave downward. Enable Zoom/Pan 75 < 10 rev -75 Answer 4 Points Separate multiple entries with a comma -23 Answer 4 Points 3 me keypad Keyboard Shortcuts ev Separate multiple entries with a comma Selecting a radio button will replace …Find step-by-step Calculus solutions and your answer to the following textbook question: Determine where the given function is increasing and decreasing and where its graph is concave upward and concave downward. Sketch the graph of the function. Show as many key features as possible (high and low points, points of inflection, vertical and horizontal … If the second derivative is positive at a point, the graph is bending upwards at that point. Similarly, if the second derivative is negative, the graph is concave down. This is of particular interest at a critical point where the tangent line is flat and concavity tells us if we have a relative minimum or maximum. 🔗. A downwards parabola, also known as a concave-down parabola, is a type of graph that represents a quadratic equation in the form of y = ax^2 + bx + c, where “a” is a negative constant. The graph of a downwards parabola opens downwards, forming a U-shaped curve. The vertex of a downwards parabola represents the lowest point on the graph ...An inflection point only requires: 1) that the concavity changes and. 2) that the function is defined at the point. You can think of potential inflection points as critical points for the first derivative — i.e. they may occur if f"(x) = 0 OR if f"(x) is undefined. An example of the latter situation is f(x) = x^(1/3) at x=0.If an answer does not exist, enter DNE.) y = 4x – 9 tan x, (-7) concave upward concave downward Determine the open intervals on which the graph is concave upward or concave downward. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) y = 8x + sinx (-7, 78) concave upward concave downward Math. Calculus. Calculus questions and answers. Identify the open intervals on which the graph of the function is concave upward or concave downward. Assume that the graph extends past what is shown. Note: Use the letter U for union. To enter ∞, type infinity. Enter your answers to the nearest integer. If the function is never concave upward ... The slope forms downward curves, similar to how concave down graphs look. Related terms. Inflection Point: An inflection point is a point on the graph where the concavity changes from concave up to concave down or vice versa. Decreasing Function: A decreasing function is one in which the y-values decrease as x-values increase.If the parabola opens down, the vertex represents the highest point on the graph, or the maximum value. In either case, the vertex is a turning point on the graph. The graph is also symmetric with a vertical line drawn through the vertex, called the axis of symmetry. These features are illustrated in Figure 2.A Concave function is also called a Concave downward graph. Intuitively, the Concavity of the function means the direction in which the function opens, concavity describes the …Step 1. The question is based on plot of graph. Select the graph which satisfies all of the given conditions. Justify your answer in terms of derivatives and concavity information below. You should explain why the graph you chose is correct as opposed to a solution by eliminating options. Specifically, your explanation should be a guide for how ...Question: 19) Determine the open intervals on which the graph of the given function is concave upward or concave downward and find all points of inflection a. f (x)=21x4−x3+x b. h (x)=x−4. There are 2 steps to solve this one.Advertisement Hans Lippershey of Middleburg, Holland, gets credit for inventing the refractor in 1608, and the military used the instrument first. Galileo was the first to use it i...The graph of y=f (x) is concave down when the derivative f’ (x) is decreasing or equivalently when the second derivative f” (x)<0. In this case f (x)=- (5/x)-2 so f’ (x)=5/x^2 and f” (x)=-10/x^3 and hence f” (x)<0 if and only if x<0. Answer: x < 0. Still looking for help?Let's look at the sign of the second derivative to work out where the function is concave up and concave down: For \ (x. For x > −1 4 x > − 1 4, 24x + 6 > 0 24 x + 6 > 0, so the function is concave up. Note: The point where the concavity of the function changes is called a point of inflection. This happens at x = −14 x = − 1 4. When the second derivative is negative, the function is concave downward. And the inflection point is where it goes from concave upward to concave downward (or vice versa). And 30x + 4 is negative up to x = −4/30 = −2/15, positive from there onwards. So: f (x) is concave downward up to x = −2/15. f (x) is concave upward from x = −2/15 on. Microsoft Excel is a spreadsheet program within the line of the Microsoft Office products. Excel allows you to organize data in a variety of ways to create reports and keep records...Graphically, a function is concave up if its graph is curved with the opening upward (Figure 1a). Similarly, a function is concave down if its graph opens downward (Figure 1b). Figure 1. This figure shows the concavity of a function at several points. Notice that a function can be concave up regardless of whether it is increasing or decreasing.Free Functions Concavity Calculator - find function concavity intervlas step-by-stepQuestion: Determine the open intervals on which the graph is concave upward or concave downward. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) y = 5x - 7 tan x, (-) concave upward concave downward X Determine whether Rolle's Theorem can be applied to fon the closed interval [a, b].Databases run the world, but database products are often some of the most mature and venerable software in the modern tech stack. Designers will pixel push, frontend engineers will...is concave upward or downward. Let f be a function whose second derivative exists on an open interval I. Test For Concavity: 1. If f''(x) > 0 for all x in I, then the graph of f is concave upward on I. 2. If f''(x) < 0 for all x in I, then the graph of f is concave downward on I.
The First Derivative Test. Corollary 3 of the Mean Value Theorem showed that if the derivative of a function is positive over an interval I then the function is increasing over I. On the other hand, if the derivative of the function is negative over an interval I, then the function is decreasing over I as shown in the following figure. Figure 1.. Richmond humane society
Graphically, concave down functions bend downwards like a frown, and concave up function bend upwards like a smile. Example 3: Determine Intervals of Concavity from a …“concave” or “convex down” used to mean “concave down”. To avoid confusion we recommend the reader stick with the terms “concave up” and “concave down”. Let's now continue Example 3.6.2 by discussing the concavity of the curve.Math; Calculus; Calculus questions and answers; Describe the test for concavity. Form test intervals by using the values for which the or does not exist and the values at which the function is Using the test intervals, determine the sign of the - The graph is concave upward if the - Then the graph is concave downward if the Describe the test for concavity.1) that the concavity changes and 2) that the function is defined at the point. You can think of potential inflection points as critical points for the first derivative — i.e. they may occur if f"(x) = 0 OR if f"(x) is undefined. An example of the latter situation is f(x) = x^(1/3) at x=0. (Note: f'(x) is also undefined.) Relevant links:Learning Objectives. Explain how the sign of the first derivative affects the shape of a function’s graph. State the first derivative test for critical points. Use concavity and inflection points to explain how the sign of the second derivative affects the shape of a function’s graph. Explain the concavity test for a function over an open ...The reflection on the front side of the spoon was upside down and smaller in size. Unlike plain mirrors, spoons have curved surfaces. The front side of a spoon is curved inwards. Such a surface is called concave. The inside part of a bowl is also an example of a concave surface. Concave mirrors are used in various medical practices.Step 1. we observe the graph the shape is concave down on entire interval ,... Consider the following graph and determine the intervals on which the function is concave upward or concave downward. 8 6 + 3 2 4 6 O Concave upward on (-0,3); Concave downward on (3,00) Never concave upward: Concave downward on (-20.00) Concave upward on …Concave Function. A concave function is a mathematical function that has a downward curve, meaning that any line segment drawn between any two points on the graph of the function will lie below or on the graph.In other words, the function is “curving inward.” Mathematically, a function \(f(x)\) is concave if its second derivative, \(f''(x)\), is …Figure 6.3 shows how the de- creasing speed leads to a decreasing slope and a graph which bends downward; thus the graph is concave down. Table 6.3 Karim's ... The concavity of a function/graph is an important property pertaining to the second derivative of the function. In particular: If 0">f′′(x)>0, the graph is concave up (or convex) at that value of x. If f′′(x)<0, the graph is concave down (or just concave) at that value of x. Concave-Up & Concave-Down: the Role of \(a\) Given a parabola \(y=ax^2+bx+c\), depending on the sign of \(a\), the \(x^2\) coefficient, it will either be concave-up or concave-down: \(a>0\): the parabola will be concave-up \(a<0\): the parabola will be concave-down A Concave function is also called a Concave downward graph. Intuitively, the Concavity of the function means the direction in which the function opens, concavity describes the state or the quality of a Concave function. For example, if the function opens upwards it is called concave up and if it opens downwards it is called concave down.Sep 13, 2020 ... Intervals Where Function is Concave Up and Concave Down Polynomial Example If you enjoyed this video please consider liking, sharing, ...A section that is concave down is defined as an interval on the graph where such a line will be below the graph. The segment line in green is concave down. The segment line in blue is concave up.Similarly, a function is concave down if its graph opens downward (Figure \(\PageIndex{1b}\)). Figure \(\PageIndex{1}\) This figure shows the concavity of a function at several points. Notice that a function can be concave up regardless of whether it is increasing or decreasing. Key Concepts. Concavity describes the shape of the curve. If the average rates are increasing on an interval then the function is concave up and if the average rates are decreasing on an interval then the function is concave down on the interval. A function has an inflection point when it switches from concave down to concave up or visa versa. See full list on tutorial.math.lamar.edu There are so many types of graphs and charts at your disposal, how do you know which should present your data? Here are 14 examples and why to use them. Trusted by business builder...If the second derivative is positive at a point, the graph is bending upwards at that point. Similarly, if the second derivative is negative, the graph is concave down. This is of particular interest at a critical point where the tangent line is flat and concavity tells us if we have a relative minimum or maximum. 🔗..