d'y If y = In(secx) and when x = then equals 4 dx? (a) 2 (b) 0 (c) 1 (d) 4 (е) 4

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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If y = In(secx) and when x ==, then
d’y
4
equals
dx
(a) 2 (b) 0
(c) 1
(d)
4
(е) 4
Transcribed Image Text:If y = In(secx) and when x ==, then d’y 4 equals dx (a) 2 (b) 0 (c) 1 (d) 4 (е) 4
Expert Solution
Step 1

In this question we have to find the value of d2ydx2 when x=π4.

Formula used,

ddxlnx=1xddxsecx=secxtanxddxtanx=sec2x

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