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Questions and Answers
Which of the following is a definition of a matrix?
Which of the following is a definition of a matrix?
- A triangular array of numbers or expressions
- A circular array of numbers or expressions
- A rectangular array of numbers or expressions (correct)
- A square array of numbers or expressions
In a 2x3 matrix, how many elements are there?
In a 2x3 matrix, how many elements are there?
- 4
- 2
- 3
- 6 (correct)
What is the identity matrix?
What is the identity matrix?
- A matrix with 1s on the diagonal and 0s elsewhere (correct)
- A matrix with all elements equal to 1
- A matrix with all elements equal to 0
- A matrix with 0s on the diagonal and 1s elsewhere
