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Example Question #1 : How To Multiply A Matrix By A Scalar
Define matrix , and let be the 3x3 identity matrix.
If , evaluate .
Possible Answers:
The correct answer is not given among the other responses.
Correct answer:
Explanation:
The 3x3 identity matrix is
Both scalar multplication of a matrix and matrix addition are performed elementwise, so
is the second element in the second row, which is 6; similarly, . The equation becomes
Example Question #1 : How To Multiply A Matrix By A Scalar
Possible Answers:
Correct answer:
Explanation:
When multiplying a constant to a matrix, multiply each entry in the matrix by the constant.
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