ONLY ANSWER QUESTION 4 IN PYTHON

3. Monomial least-squares (25 pts) In code, determine the least-squares estimation of a monomial of degree d using the n data [xk, yk] provided by the function y = sin x ex 2 and computed with constant step in x from 1 and +1. Plot and print out the points and fitting function for the following (n, d) pairs: (5,3), (10,3), (10,5). (This means you need to run your code with n = 5 an

4. Harmonic least-squares (25 pts) In code, using the same data [xk, yk] created in problem 3 continue the script code to perform the least-squares estimation using the harmonic function y = A sin(2x+), that is: compute the unknown variable A and . Please plot and print out the points and fitting function for n = 5 and n = 10. Also report the values of A and .