DLMF:4.24.E11 (Q1805)

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DLMF:4.24.E11
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    Statements

    Defining formula
    d d z ⁡ arcsec ⁡ z = ± 1 z ⁢ ( z 2 - 1 ) 1 / 2 , derivative 𝑧 𝑧 plus-or-minus 1 𝑧 superscript superscript 𝑧 2 1 1 2 {\displaystyle{\displaystyle\frac{\mathrm{d}}{\mathrm{d}z}\operatorname{arcsec% }z=\pm\frac{1}{z(z^{2}-1)^{1/2}},}}
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    DLMF id
    DLMF:4.24.E11
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    constraint
    ℜ ⁡ z ≷ 0 greater-than-or-less-than 𝑧 0 {\displaystyle{\displaystyle\Re z\gtrless 0}}
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