f(x)=|(secx,cos x,sec^2x + cot x cosecx)...

`f(x)=|(secx,cos x,sec^2x + cot x cosecx),(cos^2x,cos^2x,cosec^2 x),(1,cos^2x,cos^2x)|` then `int_0^(pi/2) f(x) dx=.....`

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The correct Answer is:

`-((15pi+32)/(60))`

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