Messin with Matrices

Matrix operations are the base by which we manipulate numbers and data in Matlab. This chapter serves as a one-stop reference for a wide range of fundamental syntax as you get familiar. Explore the examples and play with your own, use the snippet as a quick reference when you're programming, and before long this will all be second nature.

Task

• Defines the following two matrices as variables:

• Calculates the component-wise product of A and B;
• Calculates the component-wise square of matrix A;
• Calculates the component-wise square root of the sum A + B;
• Calculates the average values of each of the columns of B;
• Calculates the sum of each of the rows of A;
• Calculates the sum of all the entries of B;
• Creates a new matrix in which the third row of A is replaced with that of B;
• Calculates the maximum value of the average values of the rows of A;
• Creates a new matrix containing just rows 2-4 and columns 2-3 of B.