DLMF:4.21.E31 (Q1733): Difference between revisions

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Property / Symbols used
 
Property / Symbols used: Q11217 / rank
 
Normal rank
Property / Symbols used: Q11217 / qualifier
 
Defining formula:

z 𝑧 {\displaystyle{\displaystyle z}}

z
Property / Symbols used: Q11217 / qualifier
 
xml-id: C4.S1.XMD8.m1mdec

Latest revision as of 18:27, 1 January 2020

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DLMF:4.21.E31
No description defined

    Statements

    Defining formula
    cos ⁡ ( 3 ⁢ z ) = - 3 ⁢ cos ⁡ z + 4 ⁢ cos 3 ⁡ z , 3 𝑧 3 𝑧 4 3 𝑧 {\displaystyle{\displaystyle\cos\left(3z\right)=-3\cos z+4{\cos^{3}}z,}}
    0 references
    DLMF id
    DLMF:4.21.E31
    0 references
    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2atdec
    0 references
    Q11217
    Defining formula
    z 𝑧 {\displaystyle{\displaystyle z}}
    xml-id
    C4.S1.XMD8.m1mdec
    0 references
     
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