The scalar triple product computes the magnitude M of the moment of a force vector F about a specified line. It is M = (r × F) . n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line.

Use MATLAB to compute the magnitude M for the case where F = [12, -5, 4] N, r = [$3, 5, 2] m, and n = [6, 5, -7].