Please use matlab and save as a .mat file

Thanks so much!

Apply the the two programs to compute the interpolant to f(x) 1/25a2) and do the following: (a) Using the 21 uniformly spaced nodes rk1 k(.1), 0,1,20 have your program compute the error at -.985. (b) Using 21 Chebyshev nodes given by 2k +1 k = 0,1 2(20 +1)) , Have your program compute the error at -.985. the output of your program should be the error in each case. Give an explanation of whecther your results are comsistcat with the eror bounds for each interpolation