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Question

Solve:
y=tan1(3xx313x2),13<x<13

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Solution

Given that,

y=tan1(3xx313x2),13<x<13

Put x=tanθ then, θ=tan1x

y=tan1(3tanθtan3θ13tan2θ)

y=tan1tan3θ

y=3θ

y=3tan1x,13<x<13

Hence, this is the answer.

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