In Exercises 9 - 16, find the following matrices:

c. - 4A

A = ...

Question

In Exercises 9 - 16, find the following matrices: c. - 4A A = [6 2 - 3], B = [4 - 2 3]

Matrices A and B for exercise 14 in college algebra, chapter 7 on systems of equations.

Accepted Answer

Hey everyone here we are asked to perform the following matrix operation negative five D. Where D. Is the one by three Matrix eight negative 9 10. So here all we have to do is find negative five D. Which is the same as taking this scalar value negative five. And multiplying it by this matrix eight, negative 9 10. So here all we have to do is take this scalar value of negative five and multiply it by each entry in the matrix. So doing this we have eight times negative five. We then have negative nine times negative five. And finally we have 10 times negative five. So now we can just simplify and we will have our negative five D. Matrix. So our final matrix simplifies to eight times negative five which is negative 40. Then we have negative nine times negative five which is positive 45. And finally 10 times negative five which is negative 50. So this is our final solution here. A one by three matrix with the values negative 40 negative 50 which is answer choice D. Thanks for watching. I hope you found this video helpful and I'll see you again next time

In Exercises 9 - 16, find the following matrices: c. - 4A A = [6 2 - 3], B = [4 - 2 3]

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