DLMF:4.23.E12 (Q1764)

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DLMF:4.23.E12
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    Statements

    test
    arctan ⁡ ( - z ) = - arctan ⁡ z , 𝑧 𝑧 {\displaystyle{\displaystyle\operatorname{arctan}\left(-z\right)=-% \operatorname{arctan}z,}}
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    DLMF id
    DLMF:4.23.E12
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    constraint
    z ≠ ± i 𝑧 plus-or-minus imaginary-unit {\displaystyle{\displaystyle z\neq\pm\mathrm{i}}}
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