(a) Write a Matlab line that creates a row vector with four numbers (you choose the numbers in this series of questions) in a single row.

(b) Write a Matlab line that creates a matrix that has multiple rows of numbers.

(c) Write Matlab code (with multiple lines) that creates 2 matrices of numbers, A and B, with the same dimensions. The code should then build a matrix containing the elements of A that are less than the corresponding elements of B.

(d) Write Matlab code that creates a column vector of stock returns and a column vector of weights; again, you make up the numbers. Each weight is the percentage of capital invested in each stock in a portfolio. The code should then compute the portfolio return.