Consider the system of equations: 2a + 3b - c+ d = k a – 2b +c+ 5d = 2k a - 4b + 20 – 3d = -k 3a – b – 2c + 2d = k2 write a matlab m-file to efficiently determine all the values of k between -2 and 2 in increments of 0.01 for which the euclidean norm of the solution vector x = [a; b; c; d) is less than or equal to 2.

Johnson enterprises uses a computer to handle its sales invoices. lately, business has been so good that it takes an extra 3 hours per night, plus every third saturday, to keep up with the volume of sales invoices. management is considering updating its computer with a faster model that would eliminate all of the overtime processing.