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The value of int(0)^(pi)(Sigma(r=0)^(3)a...

The value of `int_(0)^(pi)(Sigma_(r=0)^(3)a_(r)cos^(3-r)x sin^(r)x)dx` depends upon

A

`a_(1) and a_(2)`

B

`a_(0) and a_(3)`

C

`a_(2) and a_(3)`

D

`a_(1) and a_(3)`

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The correct Answer is:
D
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