(26) Let f(x) = x?e=*. For what value(s) of x does f(x) have a horizontal tangent? (a) Find the linear approximation L(x) of f(x) = cos(x - ) at a = 0. %3D (b) Use this to approximate cos(").
(26) Let f(x) = x?e=*. For what value(s) of x does f(x) have a horizontal tangent? (a) Find the linear approximation L(x) of f(x) = cos(x - ) at a = 0. %3D (b) Use this to approximate cos(").
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
![(26) Let f(x) = x²e=*. For what value(s) of x does f(x) have a horizontal tangent?
(a) Find the linear approximation L(x) of f(x) = cos(x -) at a = 0.
(b) Use this to approximate cos(
3](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fae8bc538-d96d-4521-809f-1ff2ae4c2a62%2Fd2a59529-3ecf-423c-ad0b-2a55d6d6759d%2Fmswhesm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(26) Let f(x) = x²e=*. For what value(s) of x does f(x) have a horizontal tangent?
(a) Find the linear approximation L(x) of f(x) = cos(x -) at a = 0.
(b) Use this to approximate cos(
3
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