4) If vector A= [36-585 104 9), find the average value of the element of the vector by using matlab built in function. Matlab Command: Answer: ans = 5 5) If matrix A= (36;-58), find the determinant of square matrix A, using matlab built in function. Matlab Command: Answer: ans = 54 6) If vector A= [36-58 5 1049), find the largest element and its position by using matlab built in function. Matlab Command: Answer: u = 10 V = 6 7) Solve the following system of three linear equations: 3x - 2y + 5z = 7.5 - 4.5x+2y + 3z = 5.5 2x+y -2.5z = 4.5 Matlab Command: Answer: R= 2.3571 4.9531 2.0670