yesenia1162
13.12.2020 •
Mathematics
Consider the matrices. What is the product of matrix PQ?
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Ответ:
Step-by-step explanation:
P =![\left[\begin{array}{ccc}2&7\\3&0\\5&4\\-1&-3\end{array}\right]](/tpl/images/0978/3454/3dafd.png)
Q =![\left[\begin{array}{ccc}-4\\-3\end{array}\right]](/tpl/images/0978/3454/ee0cf.png)
PQ =![\left[\begin{array}{ccc}2(-4)+7(-3)\\3(-4)+0(-3)\\5(-4)+4(-3)\\-1(-4)+(-3)(-3)\end{array}\right]](/tpl/images/0978/3454/30c44.png)
= ![\left[\begin{array}{ccc}-29\\-12\\-32\\13\end{array}\right]](/tpl/images/0978/3454/deed0.png)
Ответ:
2m - n + (m - 2n)
2m - n + m - 2n
2m + m - n - 2n
3m - 3n
Answer is D.