DLMF:19.31.E1 (Q6689)

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DLMF:19.31.E1
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    Statements

    Defining formula
    𝐱 T ⁢ 𝐀𝐱 = ∑ r = 1 n ∑ s = 1 n a r , s ⁢ x r ⁢ x s , 𝐱 𝐀𝐱 superscript subscript 𝑟 1 𝑛 superscript subscript 𝑠 1 𝑛 subscript 𝑎 𝑟 𝑠 subscript 𝑥 𝑟 subscript 𝑥 𝑠 {\displaystyle{\displaystyle\mathbf{x}^{\mathrm{T}}\mathbf{A}\mathbf{x}=\sum_{% r=1}^{n}\sum_{s=1}^{n}a_{r,s}x_{r}x_{s},}}
    0 references
    DLMF id
    DLMF:19.31.E1
    0 references
    Symbols used
    Q11820
    Defining formula
    n 𝑛 {\displaystyle{\displaystyle n}}
    xml-id
    C19.S1.XMD3.m1dec
    0 references
     
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