Question B (40%) Given: Sx?(cos x) dx = 2x(cos x)+(x 2)sin x Write a MATLAB/Octave script that calculates the following definite integral: (* *x(cos x) dx Make sure to write your name and student ID as comments at the beginning of the script file. (5%) Make sure to name the M-file with your student ID number preceded by the letter "B" (e.g. B 10000000.m). (5%) Make sure your script runs without error messages. If any error messages appear after I run your script, you will get NO GRADE from this