Add 1. First function should use Riemann Sums to numerically calculate the definite integral with the three type option that we explained in class. 2. Second function should uses Trapezoidal Rule to calculate definite integral. 3. Third function should uses 1/3 Simpsons Rule to calculate the definite integral. 4. Test your functions by evaluating cos(x)dx and comparing it the exact value.

by python please fast as u can