Practice Dimension (2.5.9) - Tutorial lessons - Part B

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9 questions

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6 sample questions

Question 1.
What command do you use to find the size of a matrix in MATLAB?
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It's a simple command that follows the matrix variable.
Question 2.
If matrix B has size 3x2, how many columns does it have?
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Remember, the second number in size indicates columns.
3Question 3.
What is the syntax for finding the size of a matrix in MATLAB?
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Think about how you would access properties of A.
4Question 4.
True or False: A matrix of size 5x1 has 5 rows and 1 column.
- True
- False
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Pay attention to the order of rows and columns.
Question 5.
Given a matrix C with dimensions 6x3 and a matrix D with dimensions 3x4, can we multiply these two matrices? What would the dimensions of the product matrix be?
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Look at the inner dimensions. They're the key!
Question 6.
If you have a matrix A of dimensions 5x2 and you try to add it to a matrix B of dimensions 5x5, will the operation succeed? Explain your reasoning.
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Consider the compatibility of dimensions for addition.

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