DLMF:3.5.E48 (Q1304)

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DLMF:3.5.E48
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    1 4 h 2 S f ( x , y ) d x d y = j = 1 n w j f ( x j , y j ) + R . 1 4 superscript 2 subscript double-integral 𝑆 𝑓 𝑥 𝑦 𝑥 𝑦 superscript subscript 𝑗 1 𝑛 subscript 𝑤 𝑗 𝑓 subscript 𝑥 𝑗 subscript 𝑦 𝑗 𝑅 {\displaystyle{\displaystyle\frac{1}{4h^{2}}\iint_{S}f(x,y)\mathrm{d}x\mathrm{% d}y=\sum_{j=1}^{n}w_{j}f(x_{j},y_{j})+R.}}
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    d x 𝑥 {\displaystyle{\displaystyle\mathrm{d}\NVar{x}}}
    C1.S4.SS4.m1atdec
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    ( a , b ) 𝑎 𝑏 {\displaystyle{\displaystyle(\NVar{a},\NVar{b})}}
    introduction.Sx4.p1.t1.r29.m6abdec
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