xxxtechmanxxx
MATRIX QUESTION



This Question is Closed

eliassaab
Best Response
You've already chosen the best response.
0
*

xxxtechmanxxx
Best Response
You've already chosen the best response.
0
\[A = \left[\begin{matrix}a & b \\ c & 0\end{matrix}\right] and B = \left[\begin{matrix}1 & 0 \\ d & e\end{matrix}\right]. \]

xxxtechmanxxx
Best Response
You've already chosen the best response.
0
Giving your answer is terms of a,b,c,d, and e,
a)Write down A+B
b)Find AB

xxxtechmanxxx
Best Response
You've already chosen the best response.
0
Help?

eliassaab
Best Response
You've already chosen the best response.
0
for A+B add the corresponding elements of A and B

seidi.yamauti
Best Response
You've already chosen the best response.
0
a11=a+1 a12=b+0=0
...

eliassaab
Best Response
You've already chosen the best response.
0
\[
A+B=\left(
\begin{array}{cc}
a+1 & b \\
c+d & e
\end{array}
\right)
\]

eliassaab
Best Response
You've already chosen the best response.
0
\[
A B=\left(
\begin{array}{cc}
a+b d & b e \\
c & 0
\end{array}
\right)
\]

xxxtechmanxxx
Best Response
You've already chosen the best response.
0
Alright, but how do I do that? I'm a bit new to Matrices.

eliassaab
Best Response
You've already chosen the best response.
0
\[
A = \left[\begin{matrix}a & b \\ c & 0\end{matrix}\right] \text { and } B = \left[\begin{matrix}1 & 0 \\ d & e\end{matrix}\right]\\
c_{1,1}= a (1) + b(d)=a + bd\\
c_{1,2}= a (0) + b(e)=be\\
c_{2,1}= c(1) +0(d)=c\\
c_{2,2}= c(0) +0(e)=0\\
\]

eliassaab
Best Response
You've already chosen the best response.
0
Did you understand?

xxxtechmanxxx
Best Response
You've already chosen the best response.
0
Yes! Thank you!