4. Show that lim x0ex-1x-1 by first creating a vector x that has the elements: 1, 0.5, 0.1, 0.01, 0.001, 0.00001, and 0.0000001. Then, create a new vector y in which each element is determined from the elements of x by ex- 1x. Compare the elements of y with the value 1 (use format long to display the numbers). Use MATLAB to solve -2A + 3B-C+D-3E = 20 3.8 B + 0.92 C-2.2E =-13.6 1.23A-3.2C-3E-7.8 = 0 5.2B-C + 1.1D-2.5 = 0 9.4C-1.5 D-3.8E = 0 (2-3) M + (6-j4) N = 40 + j10 46-j4JM + 10 N = 40 730 Express the values of M and N in both rectangular and polar forms. (Express the angle in polar form in degrees)