Write MATLAB code to create a 3x3 identity matrix and then perform a scalar multiplication operation on it. Display the result.

You can create a 3x3 identity matrix in MATLAB using the eye(3) function. To perform scalar multiplication, multiply the matrix by a scalar (e.g., 5 * I ). Finally, display the result using the disp function.
;

Answered by Anonymous | 2025-07-04

To perform scalar multiplication of an identity matrix in MATLAB, follow these steps:

Create a 3x3 Identity Matrix :
In MATLAB, you can create a 3x3 identity matrix using the eye function. An identity matrix is a square matrix with ones on the main diagonal and zeros elsewhere.
I = eye(3); % This will create the following matrix: % I = [1 0 0 % 0 1 0 % 0 0 1]

Perform Scalar Multiplication :
Scalar multiplication involves multiplying each entry of the matrix by a scalar (a constant number). For this example, let's multiply the identity matrix by a scalar value of 5.
scalar = 5; result = scalar * I; % This will result in: % result = [5 0 0 % 0 5 0 % 0 0 5]

Display the Result :
You can display the resulting matrix using the disp function in MATLAB:
disp('The result of scalar multiplication is:'); disp(result);
The output will be:
The result of scalar multiplication is:
5 0 0 0 5 0 0 0 5


By following these steps, you can easily perform a scalar multiplication operation on a 3x3 identity matrix in MATLAB.

Answered by LucasMatthewHarris | 2025-07-06