
Introduction to MATLAB
Authored by Khairul Imtiyaz
Computers
University

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20 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Create two variables, X as a 5-by-5 identity matrix and Y as a 2-by-3 matrix of random values. Use the whos command to display information about the variables in the workspace.
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Using the variables X and Y from Question 1, save them to a file named workspaceData.mat, then clear all variables from the workspace.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Reload the variables X and Y into the workspace from the workspaceData.mat file created in Question 2.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Define variables p = 10 and q = 4, then compute their product, product_pq, without displaying the result in the Command Window. Use the arrow key to recall the command for defining q, change its value to 6, and compute the new product.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Create a 3-by-3 matrix A with the following values: Then, add 5 to each element of A and display the result.
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
Transpose the matrix A from Question 1. Then, calculate the element-wise square of each element in the transposed matrix.
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
Concatenate the matrix A horizontally with itself to create a new matrix B that has double the columns of A. Then, concatenate A vertically with itself to create a matrix C that has double the rows of A.
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