1.
Suppose the random variable U has a uniform (0,1) distribution.
Let F be a continuous distribution function. Then the random variable X = F^(-1)(U)
has distribution function F.
Note: F(x)=(x-a)/(b-a), for uniform random variable at [a,b] interval. Here F(u)=u.
2.Monte Carlo Integration
generate x1, x2,...,xn from uniform(a,b), then compute Yi = (b - a)g(Xi). Then mean Y is a consistent estimate of the integral
Note: 1. definite integral is a number.
3. Accept-Reject Generation Algorithm