(x-V3)(x+V3) Given f(x) = x3 1. x3 (3-x)(3+x) f(x) =. f"(x)=. 2(x-V18)(x+V18) raw sign chart for f" (the second derivative of f) and indicate what x-values give inflection points. so indicate on sign chart where f is concave up and where f is concave down. DO NOT FIND THE ORRESPONDING y-VALUES OF THE INFLECTION POINTS.

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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Author:HOUGHTON MIFFLIN HARCOURT
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Chapter8: Graphing Quadratic Functions
Section: Chapter Questions
Problem 17CT
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Question
x²-3
1.
Given f(x) = *-3 - (x-v3)(x+v3)
%3D
x3
(3-x)(3+x)
f(x) =.
2(x-V18)(x+V18)
f"(x)=-
Draw sign chart for f" (the second derivative of f) and indicate what x-values give inflection points.
Also indicate on sign chart where f is concave up and where f is concave down. DO NOT FIND THE
CORRESPONDING y-VALUES OF THE INFLECTION PÓINTS.
Transcribed Image Text:x²-3 1. Given f(x) = *-3 - (x-v3)(x+v3) %3D x3 (3-x)(3+x) f(x) =. 2(x-V18)(x+V18) f"(x)=- Draw sign chart for f" (the second derivative of f) and indicate what x-values give inflection points. Also indicate on sign chart where f is concave up and where f is concave down. DO NOT FIND THE CORRESPONDING y-VALUES OF THE INFLECTION PÓINTS.
Expert Solution
Step 1:Here we have to draw sign chart for f".

Given that,

   f"(x) = 2(x-18)(x+18)x5

To draw sign chart, lets consider

                                                                           f"(x) = 0  2(x-18)(x+18)x5 = 0                           x2 - 18 = 0                                   x2  = 18                                      x = ±18

Step 2:

Now we draw sign chart for f",

Calculus homework question answer, step 2, image 1

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