f(1)= 20, f(3)=13, f(5)=15, f(7)=16, f(9)=11, on [0,6]
a, used midpint rule with n=5 to estimate intergral form 0 to 10 f(x)dx
b, use trapezoidal rule with n=4 to estimate intergral from 1 to 9 f(x)dx
c, used simpson's rule with n=4 to estimate intergal from 1 to 9 (x)dx