$$q$$ -cosine function (Q10449)

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$$q$$ -cosine function
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    Statements

    Defining formula
    cos q ⁡ ( x ) q-cos 𝑞 𝑥 {\displaystyle{\displaystyle\mathrm{cos}_{\NVar{q}}\left(\NVar{x}\right)}}
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    DLMF id
    DLMF:17.3.E5
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    xml-id
    C17.S3.E5.m2adec
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    comment
    $$q$$ -cosine function
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