Practice Matrices And Types Of Matrices (21.2) - Linear Algebra

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9 questions

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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define what a matrix is.
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Think of how numbers are organized.
Question 2.
What is a row matrix?
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Consider the arrangement of elements.
3Question 3.
What defines a singular matrix?
- It has a determinant of 0
- It is a row matrix
- It is a non-square matrix
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Recall the definition of singular matrices.
4Question 4.
True or False: An identity matrix can have diagonal entries other than 1.
- True
- False
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Think about the functions of an identity matrix.
Question 5.
Given the following matrix A = [[2, 0, 0], [0, 3, 0], [0, 0, 0]], determine its type (singular/non-singular) and explain your reasoning.
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Check the determinant!
Question 6.
Create a 2x2 diagonal matrix and a scalar matrix, then prove their differences through multiplication with another matrix.
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Perform the multiplication!

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