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Metode Numerik 2 - Universitas Indonesia

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Contoh dan quadrature Gauss-Legendre untuk beberapa N terkecil:<br />

w<br />

N<br />

2<br />

3<br />

4<br />

5<br />

xi i<br />

±<br />

±<br />

±<br />

±<br />

±<br />

±<br />

x<br />

1<br />

∫ f(x)dx =<br />

N<br />

-1<br />

i=<br />

1<br />

0.577350269189626<br />

0.774596669241483<br />

0.000000000000000<br />

0.861136311594053<br />

0.339981043584856<br />

0.906179845938664<br />

0.538469310105683<br />

0.000000000000000<br />

∑<br />

w f(x )<br />

i<br />

i<br />

w<br />

1.000000000000000<br />

0.555555555555556<br />

0.888888888888889<br />

0.347854845137454<br />

0.652145154862546<br />

0.236926885056189<br />

0.478628670499367<br />

0.568888888888889<br />

97

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