04.05.2013 Views

Metode Numerik 2 - Universitas Indonesia

Metode Numerik 2 - Universitas Indonesia

Metode Numerik 2 - Universitas Indonesia

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Quadrature Trapezoid<br />

Kurva integrand f(x) diinterpolasi dengan sebuah garis lurus (f(x) diinterpolasi<br />

dengan fungsi linier / polinomial orde 1):<br />

b<br />

∫<br />

b<br />

∫<br />

N<br />

a<br />

a<br />

i=<br />

1<br />

I = f(x) dx ≅ p(x) dx = ∑wip(x<br />

i),<br />

Untuk menarik garis lurus<br />

diperlukan minimal 2 titik,<br />

dipilih titik f(a) dan f(b):<br />

p(a) = f(a), p(b) = f(b)<br />

f(x)<br />

p(x) = r + sx<br />

b<br />

∫<br />

a<br />

p(x)<br />

p(x) dx<br />

a b<br />

x<br />

83

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!