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Numerical integration; Simpson¡Çs rule, using a quadratic equation

ÀÛ¼ºÀÚ Uploader : mangsteen ÀÛ¼ºÀÏ Upload Date: 2019-06-24º¯°æÀÏ Update Date: 2019-07-16Á¶È¸¼ö View : 261

When the function f (x) is integrated with respect to the sections a and b, an approximate value can be obtained by substituting with a quadratic equation.

¡òf(x)¡Ö¡òP(x) = ((b-a)/6)*(f(a)+4*f((a+b)/2)+f(b))

Letting m=(a+b)/2, fx0 = f(a), fx1 = f(m), and fx2 = f(b), We get :

Res = ((b-a)/6)*(fx0+4*fx1+fx2)

If the interval is h, then h = (b-a)/2 and it is called the 1/3 formula.

Res = (h/3)*(fx0+4*fx1+fx2)


*** Âü°í¹®Çå[References] ***

https://en.wikipedia.org/wiki/Simpson%27s_rule
Res = ((b-a)/6)*(fx0+4*fx1+fx2)
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