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Let f(x)={{:(x^2+4x "," -3 le x le 0),(...

Let `f(x)={{:(x^2+4x "," -3 le x le 0),(-sin x ","0 lt x le pi//2 ),(-cos x -1 "," pi//2 lt x le pi):}`
which one of the following is not true ?

A

x=-2 is the point of global minimum

B

x=`pi` is the point of global maximum

C

f(x) is not differentiable at `x= pi/2`

D

f(x) is discontinunous at x=0

Text Solution

Verified by Experts

The correct Answer is:
A,D
If is evident from the graph of the function that options (a),(b) and (c ) are true
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OBJECTIVE RD SHARMA-MAXIMA AND MINIMA -Section I - Solved Mcqs
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