Consider the regular subdivision of the interval [a, b] as a = x0

Extracted text: Consider the regular subdivision of the interval [a, b] as a = x0 < xl="">< x2="">< x3="">< x4="b," with="" the="" step="" size="" h="f(b)" =="" 1,="" f(x1)="1.5," f(x2)="f(x3)" 2,="" then="" the="" approximation="" of="" i="f" f(x)dx="" using="" composite="" simpson's="" rule="" with="" n="4" is:="" xi+1="" -="" xi,="" and="" define="" the="" functionf="" on="" [a,="" b]="" such="" that="" f(a)="=" 2.="" suppose="" that="" the="" length="" of="" the="" interval="" [a,="" b]="" is="" %3d="" o="" 5="" 5/3="" 5/2="" o="">