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DLMF:4.34.E3 - MaRDI portal

DLMF:4.34.E3 (Q2207)

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DLMF:4.34.E3
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    Statements

    d d z tanh z = sech 2 z , derivative 𝑧 𝑧 2 𝑧 {\displaystyle{\displaystyle\frac{\mathrm{d}}{\mathrm{d}z}\tanh z={% \operatorname{sech}^{2}}z,}}
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    d f d x derivative 𝑓 𝑥 {\displaystyle{\displaystyle\frac{\mathrm{d}\NVar{f}}{\mathrm{d}\NVar{x}}}}
    C1.S4.E4.m2abdec
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    sech z 𝑧 {\displaystyle{\displaystyle\operatorname{sech}\NVar{z}}}
    C4.S28.E6.m2adec
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    tanh z 𝑧 {\displaystyle{\displaystyle\tanh\NVar{z}}}
    C4.S28.E4.m2adec
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    z 𝑧 {\displaystyle{\displaystyle z}}
    C4.S1.XMD8.m1bdec
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    Identifiers