DLMF:4.38.E13 (Q1963)

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DLMF:4.38.E13
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    d d z arcsech z = - 1 z ( 1 - z 2 ) 1 / 2 . derivative 𝑧 hyperbolic-inverse-secant 𝑧 1 𝑧 superscript 1 superscript 𝑧 2 1 2 {\displaystyle{\displaystyle\frac{\mathrm{d}}{\mathrm{d}z}\operatorname{% arcsech}z=-\frac{1}{z(1-z^{2})^{1/2}}.}}
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