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# Prove the identity.$\tanh (x + y) = \frac { \tanh x + \tanh y}{1 + \tanh x \tanh y}$

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Derivatives

Differentiation

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### Video Transcript

we know that we now have a sign of X plus y dried by co sign H of X plus y, which gives us sign Age Axe Co Sign age. Why less co sign Axe Sign Age Why sign H Arcs Sign h Y and this can be simplified to Tangent of H acts plus 10 h y Divide by one plus 10 h acts times 10 h Wife.

Derivatives

Differentiation

Lectures

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