1. For each of the following least squares problems: find the matrix A and vector by hand, then use MATLAB to calculate the pseudoinverse Al and find 2. Give the values of , Az, and ||0 17|| 1|1|23|15 (a) Find the line that best fits the following data. y 35 889 (b) Find the polynomial of degree at most 3 that best fits the data in part (a). (e) Find the function of the form f(t) =ae +be24 that best fits the data in part (a). (d) Find the function of the form f(x) = a + b 2 + c that best fits the data in part (a)