4. a) Using the following variables write a single line MATLAB codes to retrive given output. (You need to use at least two of the variables for each solution. Using scalar values is allowed along with the variables)(Hint: consider logicals for some of them).(20 points) A = [7 77 7]; B= 6:9; C= 3; D = 2; E = 8; F=[C,D,E,D]; i.) [1 1 1 1] = ? ii.) [0 0 1 0] = ? iii.) [10.0000 10.5000 11.0000 11.5000) = ? iv.) [0 1 0 0) = ? v.) [37; 27; 8 7; 2 7;] = ? b) Consider given matrix A below. Write a MATLAB program that computes the matrix B by computing square root of all the elements of A whose values is greater than or equal to 1, and adding 15 to other elements of matrix A. Compute the matrix B in a vectorized way (which means no loops). (10 points) 4 25 A= -3 16 -2 -7 9. 0