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If f(x)=|{:(cosx,1,0),(1,2cosx,1),(0,1,2...

If `f(x)=|{:(cosx,1,0),(1,2cosx,1),(0,1,2cosx):}|" then "int_(0)^(pi//2)f(x)dx=`

A

`1//4`

B

`1//3`

C

`1//2`

D

`-1//3`

Text Solution

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