II

USE MATLAB LANGUAGE PLEASE

Erercise 2: Variables and amuys 1. Create the variables to represent the following matrices: 5 8 3 A 12 17 3 4 B= 123 a) Assign to the variable x1 the value of the second column of matrix A. b) Assign to the variable x2 the third column of matrix B. c) Assign to the variable x3 the third row of matrix B. d) Assign to the variable x4 the first three values of matrix A as the first row, and all the values in matrix B as the second, third and fourth rows. 2. If matrix A is defined using the MATLAB code A - [1 3 2; 2 11;;3 2 3], which command will produce the following matrix? B= 3. Create variables to represent the following matrices: 1 2 3 A=1222 -1 2 1 B=1110 C=121 a) Try performing the following operations: A+B, A B, A+C, B-A, B-A, A*C C-B, C A. What are the results? What error messages are generated? Why? b) What is the difference between A B and A.B? 4. Solve the following systems of linear equations. Remember to verify your solutions. a) -2x +y=3 +9=10