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If In = ∫ tan^n x dx, n ∈ [0,π ⁄ 4] N, then In + 2 + In equals :

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If In = ∫tann x dx, n ∈ [0,π ⁄ 4] N, then In + 2 + In equals :

(a) 1/n

(b) 1/n − 1

(c) 1/n + 1

 (d) 1/n + 2

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Correct option (c) 1/n + 1

Explanation:

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