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Let f(x)=|[sec^2x,1,1],[cos^2x,cos^2x,co...

Let `f(x)=|[sec^2x,1,1],[cos^2x,cos^2x,cosec^2x],[1,cos^2x,cot^2x]|`, then

A

`f_(-pi//4)^(pi//4)f(x)dx=(1)/(16)(3pi+8)`

B

`f"'(pi)/(2)=0`

C

maximum value of f(x) is 1

D

minimum value of f(x) is 0

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The correct Answer is:
A, B, C, D
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