my last three digit is 138

3) (30 pts) In this problem, the last two digits of your student number will be significant. Let N, be a number equal to the last digit of your student number, N, be a number equal to the last two digits of your student number. That is, if the last three digits of your student number is 83 then, N, = 3, N2 = 83 Consider a function f(x)=cos (n x defined and continuous on the interval [N1, N2). Using the Least Squares method find a polynomial of degree two approximating this function. For the solutions, you must only use a calculator and you have to show all the details