Find all the values of x where the tangent line is horizontal. 3 f(x)=2x +42x+270x+4 X= (Use a comma to separate answers as needed. Type an exact answer, using radicals as needed. Simplify your answer.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter3: Multi-step Equations And Inequalities
Section: Chapter Questions
Problem 14PTTS
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Find all the values of c where the tangent line is horizontal
Find all the values of x where the tangent line is horizontal.
3
f(x) = 2x³ +42x² +270x+4
x=7
X=
(Use a comma to separate answers as needed. Type an exact answer, using radicals as needed. Simplify your
answer.)
Transcribed Image Text:Find all the values of x where the tangent line is horizontal. 3 f(x) = 2x³ +42x² +270x+4 x=7 X= (Use a comma to separate answers as needed. Type an exact answer, using radicals as needed. Simplify your answer.)
Expert Solution
Step 1

f(x)=2x3+42x2+270x+4for horizontal tangent line slope is zero slope=f'(x)dxndx=nxn-1

 

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