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Question

Question: \({\tan h}(x + y)\) equals....

tanh(x+y){\tan h}(x + y) equals.

A

tanhx+tanhy1tanhxtanhy\frac{\tanh x + \tanh y}{1 - \tanh x\tanh y}

B

tanhx+tanhy1+tanhxtanhy\frac{{\tan h}x + {\tan h}y}{1 + {\tan h}x{\tan h}y}

C

tanhxtanhy1tanhxtanhy\frac{\tanh x - \tanh y}{1 - \tanh x\tanh y}

D

tanhxtanhy1+tanhxtanhy\frac{{\tan h}x - {\tan h}y}{1 + {\tan h}x{\tan h}y}

Answer

tanhx+tanhy1+tanhxtanhy\frac{{\tan h}x + {\tan h}y}{1 + {\tan h}x{\tan h}y}

Explanation

Solution

It is obvious.