It is not graded. Show work clearly and solve in paper or in course hero no python codes

1. Short Answer. SHOW ALL WORK (20 points; 4 pts each except) (a) Use a Python command to create a matrix with 3 rows and 4 columns that contain random numbers between-2 and 6. (b) Compute the value of "C" by hand >> alpha=2; A=np.array[[ 2, -1, 1], [4, -2, -1], [1, -1, 2]]; B = np.array[[3, 1], [2, -1]] >> C= alpha* A[0:1, 1:2] *np.transpose(B) (c) Define roundoff error and truncation error and explain the difference between them (d) Consider the following equation for Z which is a function of X and Y: Z=4* sin(2*X) + 3* cos(2*Y) ^ ^ ^ ^ ^ ^ Make a 3D surface plot (plot_surface() command) that ranges from 0