The error function, x 2 erf ( x )= et dt 0 2 important in probability and in the theories of heat flow and signal transmission, must be t evaluated numerically because there is no elementary expression for the antiderivative of e a. Use Simpson's Rule with n=6 to estimate erf(3) b. In [0,3] | | d 4 t (e ) 12 d t4 2 Give an upper bound for the magnitude of the error of the estimate in part (a). Type an integer or decimal rounded to six decimal places as needed 2