(1) Consider the function ). . a: at, 3;) = s1n(:cy) + cos(; (a) Compute the local linearization of f (ac, y) at (i, 1). (b) Compute the quadratic polynomial for f (as, y) at(%, 1). (c) Compare the values of the linear and quadratic approximations in part (a) and (b) with the true values for f($, y) at the points (0.7,0.9), (0.75,1.1) and (0.07.1.2). Which two approximations gives the closest values