DLMF:28.32.E4 (Q8553)

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DLMF:28.32.E4
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    Statements

    Defining formula
    ∂ 2 ⁡ K ∂ ⁡ z 2 - ∂ 2 ⁡ K ∂ ⁡ ζ 2 = 2 ⁢ q ⁢ ( cos ⁡ ( 2 ⁢ z ) - cos ⁡ ( 2 ⁢ ζ ) ) ⁢ K . partial-derivative 𝐾 𝑧 2 partial-derivative 𝐾 𝜁 2 2 𝑞 2 𝑧 2 𝜁 𝐾 {\displaystyle{\displaystyle\frac{{\partial}^{2}K}{{\partial z}^{2}}-\frac{{% \partial}^{2}K}{{\partial\zeta}^{2}}=2q\left(\cos\left(2z\right)-\cos\left(2% \zeta\right)\right)K.}}
    0 references
    DLMF id
    DLMF:28.32.E4
    0 references
    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2abdec
    0 references
    partial derivative of $$f$$ with respect to $$x$$
    Defining formula
    ∂ ⁡ f ∂ ⁡ x partial-derivative 𝑓 𝑥 {\displaystyle{\displaystyle\frac{\partial\NVar{f}}{\partial\NVar{x}}}}
    xml-id
    C1.S5.E3.m4abdec
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    partial differential of $$x$$
    Defining formula
    ∂ ⁡ x 𝑥 {\displaystyle{\displaystyle\partial\NVar{x}}}
    xml-id
    C1.S5.E3.m2abdec
    0 references
    Q12271
    Defining formula
    q = h 2 𝑞 superscript ℎ 2 {\displaystyle{\displaystyle q=h^{2}}}
    xml-id
    C28.S1.XMD10.m1dec
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    Q12272
    Defining formula
    z 𝑧 {\displaystyle{\displaystyle z}}
    xml-id
    C28.S1.XMD6.m1dec
    0 references
    Q12335
    Defining formula
    ζ 𝜁 {\displaystyle{\displaystyle\zeta}}
    xml-id
    C28.S32.XMD5.m1dec
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    Q12336
    Defining formula
    K ⁢ ( z , ζ ) 𝐾 𝑧 𝜁 {\displaystyle{\displaystyle K(z,\zeta)}}
    xml-id
    C28.S32.XMD7.m1dec
    0 references
     
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