[5 points] Using regression, find the coefficients of the following equation y=ae + b * sin(3x) + cx2 that will fit the following data: xdat = [ ydat = [ .05, .1, 1.2, .2, 1.5, 2.1, 2.6, 3.3, 3.8, .3, .5, .7, .9, 1]; 3.6, 3.6]; Linear regression, details as clear as possible please