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 < x1="">< x2="">< x3="">< x4="b," with="" the="" step="" size="" h="xi+1-" xị,="" and="" define="" the="" function="" f="" on="" [a,="" b]="" such="" that="" f="" (a)="" f(b)="" f(x3)="2." suppose="" that="" the="" length="" of="" the="" interval="" [a,="" b]="" is="" 3,="" then="" the="" approximation="" of="" i="f," f(x)dx="" using="" composite="" simpson's="" rule="" with="" n="4" is:="" 1,="" f(x1)="1.5,">