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If In = int0^(pi//4) tan^n theta d theta...

If `I_n = int_0^(pi//4) tan^n theta d theta`, then for any +ve integer n, the value of `n(I_(n - 1) + I_(n + 1))` is :

A

1

B

2

C

`pi//4`

D

`pi`

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The correct Answer is:
A
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