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f: R rarr R, g: R rarr R are continuous ...

`f: R rarr R, g: R rarr R` are continuous functions. The value of integral `int_(-pi//2)^(pi//2) [f(x) + f(-x)] [g(x) -g(-x)] dx` is

A

`pi`

B

`1`

C

`-1`

D

`0`

Text Solution

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The correct Answer is:
D
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