
To create:
• The variable for the given matrix
• The variable for the given two matrices
• Whether other multiplication operation can be performed in part 2 or not.
Answer to Problem 42E
Solution:
• The variable for the given matrix
• The variable for the given two matrices
• The variable for the given two matrices
Explanation of Solution
• The variable for the given matrix
The given matrices are,
And,
Substitute
Therefore, the elements of the matrix “3*A” are
Now, verify the expression output through the MATLAB command.
MATLAB Code:
A = [1 4; 3 2]
% Define the command to get the matrix “A”.
3*A
% Define the command to get the output of the expression “3*A”.
Save the MATLAB script with name, chapter2_45251_2_42_1E.m in the current folder. Execute the script by typing the script name at the command window to create the variable for the given matrix
Result:

Therefore, the variable for the given matrix
• The variable for the given two matrices
The given matrices are,
And,
Substitute
Therefore, the elements of the matrix “A*C” are
Now, verify the expression output through the MATLAB command.
MATLAB Code:
A = [1 4; 3 2]
% Define the command to get the matrix “A”.
C = [3 2 5; 4 1 2]
% Define the command to get the matrix “C”.
A*C
% Define the command to get the output of the expression “A*C”.
Save the MATLAB script with name, chapter2_45251_2_42_2E.m in the current folder. Execute the script by typing the script name at the command window to create the variable for the given two matrices
Result:

Therefore, the variable for the given two matrices
• Whether other multiplication operation can be performed in part 2 or not.
The given matrices are,
And,
Substitute
Therefore, the elements of the matrix “C*B” are
Now, verify the expression output through the MATLAB command.
MATLAB Code:
C = [3 2 5; 4 1 2]
% Define the command to get the matrix “C”.
B = [2 1 3; 1 5 6; 3 6 0]
% Define the command to get the matrix “B”.
C*B
% Define the command to get the output of the expression “C*B”.
Save the MATLAB script with name, chapter2_45251_2_42_3E.m in the current folder. Execute the script by typing the script name at the command window to create the variable for the given two matrices
Result:

Therefore, the variable for the given two matrices
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Chapter 2 Solutions
Matlab, Fourth Edition: A Practical Introduction to Programming and Problem Solving
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