DLMF:4.34.E3 (Q1863)

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DLMF:4.34.E3
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    Statements

    test
    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,}}
    0 references
    DLMF id
    DLMF:4.34.E3
    0 references
    Symbols used
    derivative of $$f$$ with respect to $$x$$
    test
    d f d x derivative 𝑓 𝑥 {\displaystyle{\displaystyle\frac{\mathrm{d}\NVar{f}}{\mathrm{d}\NVar{x}}}}
    xml-id
    C1.S4.E4.m2abdec
    0 references
     
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