DLMF:4.35.E40 (Q1914)

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Language	Label	Description	Also known as
English	DLMF:4.35.E40	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle|\tanh z|=\left(\frac{\cosh\left(2x\right)-\cos% \left(2y\right)}{\cosh\left(2x\right)+\cos\left(2y\right)}\right)^{1/2}.}}

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DLMF:4.35.E40

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cosine function

Defining formula

{\displaystyle{\displaystyle\cos\NVar{z}}}

C4.S14.E2.m2afdec

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hyperbolic cosine function

Defining formula

{\displaystyle{\displaystyle\cosh\NVar{z}}}

C4.S28.E2.m2aacdec

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hyperbolic tangent function

Defining formula

{\displaystyle{\displaystyle\tanh\NVar{z}}}

C4.S28.E4.m2ahdec

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Defining formula

{\displaystyle{\displaystyle x}}

C4.S1.XMD6.m1fdec

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Defining formula

{\displaystyle{\displaystyle y}}

C4.S1.XMD7.m1fdec

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Sitelinks

Wikipedia(0 entries)

DRMF related sites(0 entries)

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