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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

minus 1

B

2

C

1

D

minus 2

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The correct Answer is:
C
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