A = magic (5) gives the following matrix: 24 5 17 23 4 6 10 12 11 18 1 7 13 19 25 8 14 20 21 2 15 16 22 3 9 a) Write a single line Matlab instruction to create a matrix B that will contain the elements of A that are even and greater than 4. Give the values in B. b) Write a single line Matlab code to produce matrix B from A by swapping A's 1st and 3rd rows. [5 marks] Question 12 a) Write the code that uses a for loop to evaluate the expression: 1 (n+1) n=1 b) Write the code to vectorize the summation in question a). 100