I am trying to find the more general composite rule of this basic rule :
Integral from 0 to 1 of a function of x = h/12[5f(0) + 8f(1) - f(2)]
This works with h = 1 on f(x) = x for example, but I cannot figure out how to get it to work if you take h = 1/2 for example. Please help! I figured this out but it doesn't seem to work.