Answer to Question #278905 in Linear Algebra for Sam

Question #278905

If the matrix R =[-5 2]

[M -4]

is singular, determine the

value of m .


1
Expert's answer
2021-12-13T16:16:49-0500

A square matrix is singular if and only if its determinant is zero.


R=[52m4]R=\begin{bmatrix} -5&2\\m&-4 \end{bmatrix}


52m4=(5)(4)2m=202m=0\begin{vmatrix} -5&2\\m&-4 \end{vmatrix}=(-5)\cdot (-4)-2m=20-2m=0


Answer: m=10m=10 .


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment