DLMF:4.40.E3 (Q1975)

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DLMF:4.40.E3
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    Statements

    Defining formula
    ∫ tanh ⁡ x ⁢ d x = ln ⁡ ( cosh ⁡ x ) . 𝑥 𝑥 𝑥 {\displaystyle{\displaystyle\int\tanh x\mathrm{d}x=\ln\left(\cosh x\right).}}
    0 references
    DLMF id
    DLMF:4.40.E3
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    Symbols used
    Q10770
    Defining formula
    d x 𝑥 {\displaystyle{\displaystyle\mathrm{d}\NVar{x}}}
    xml-id
    C1.S4.SS4.m1abdec
    0 references
    hyperbolic cosine function
    Defining formula
    cosh ⁡ z 𝑧 {\displaystyle{\displaystyle\cosh\NVar{z}}}
    xml-id
    C4.S28.E2.m2abdec
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