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The points of extremum of phi (x)=int(1)...

The points of extremum of `phi (x)=int_(1)^(x)e^(-t^(2//2)) (1-t^(2)) dt` are

A

x=0,1

B

x=1,-1

C

x=`1//2`

D

`x=-1//2`

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The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-MAXIMA AND MINIMA -Exercise
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