Math Is Fun Forum

Hannibal lecter

Member

Registered: 2016-02-11

Posts: 392

who have the prove of tanh(x+y)?

Hi,

prove :-

tanh(x + y) = (tanh x + tanh y)/(1 + tanh x + tanh y)

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Wisdom is a tree which grows in the heart and fruits on the tongue

Bob

Administrator

Registered: 2010-06-20

Posts: 10,640

Re: who have the prove of tanh(x+y)?

Hi

Do you have formulas for sinh(x + y) and cosh(x+y) ?

If yes, use tanh = sinh / cosh

Or go back to definitions in terms of "e"

Bob

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Children are not defined by school ...........The Fonz
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Sometimes I deliberately make mistakes, just to test you!  …………….Bob