Hello i really need help with this please.

From Michael T. Heath - Scientific Computing/ Chapter 3/ computer problem 3.4

i need to solve this problem using matlab, thankyou

3.4. (a) Solve the following least squares prob- lem using any method you like: 0.16 0.10 0.26 | 0.28 | . 3.31 2 1 | 2.02 1.29 2 (b) Now solve the same least squares problem again, but this time use the slightly perturbed right-hand side 0.271 b 0.25 3.33 (e) Compare your results from parts a and b Can you explain this difference