Question 1: A. Create the following matrix using vector notation for creating vectors with spacing and/or the linspace command. Do not type individual elements explicitly. [10 pt] 6 18 9 4 = 4 3 4 2 -6 12 4 -1 15 4 -2 4 1 -3 -4 -2 O 2 4 Question3: Generate a figure with 2 x 2 array of windows. In the 4 windows graph the following 4 functions over the interval -2 5x52: [10 pt] y = sin(x) f= 2e-X g = 5x3+x2-5 z=e*cos(2x+3) note: for each plot add the suitable xlabel, ylabel, title, and legend