Describe the concavity of the function f (z) = O The graph is concave down for x < 0 and concave up for x > 0. O The graph is concave up for x < 0 and concave down for x > 0. O The graph is concave up for x< 0 and concave up for x > 0. O The graph is concave down for x< 0 and concave down for x > 0.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.3: The Natural Exponential Function
Problem 51E
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Describe the concavity of the function f (a
O The graph is concave down for x < 0 and concave up for x > 0.
O The graph is concave up for x < 0 and concave down for x > 0.
O The graph is concave up for x < 0 and concave up for x > 0.
O The graph is concave down for x < 0 and concave down for x > 0.
Transcribed Image Text:Describe the concavity of the function f (a O The graph is concave down for x < 0 and concave up for x > 0. O The graph is concave up for x < 0 and concave down for x > 0. O The graph is concave up for x < 0 and concave up for x > 0. O The graph is concave down for x < 0 and concave down for x > 0.
Expert Solution
Step 1 : Analysis

Given :

fx = 1x3

Step 2 : Simplficiation

Calculating the first derivative 

fx = x-3f'x = -3x-4

Calculating the second derivative 

f''x = --43x-5f''x = 12x-5

 

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