Question

Matrices help? Find 2A + 3B. (see attachment)

Answer 1

\[n * \left[\begin{matrix}a & b \\ c & d\end{matrix}\right]= \left[\begin{matrix}n*a & n*b \\ n*c & n*d\end{matrix}\right]\]
\[\left[\begin{matrix}a & b \\ c & d\end{matrix}\right]+\left[\begin{matrix}e & f \\ g & h\end{matrix}\right]=\left[\begin{matrix}a+e & b+f \\ c+g & d+h\end{matrix}\right]\]

Answer 2

thanks! theres two more questions could you please help? its Find 1.5D. with the same matrices

Answer 3

wait i dont get your answer..

Answer 4

i just used variables- they just represent any given number

so basically for 2A

n=2
and a b c d = the numbers within the matrix

Answer 5

so whats the answer @completeidiot

Answer 6

dunno, didnt look at the problem, i just gave you the properties of matrix addition and multiplication that would help you solve it

Answer 7

a b c or d?

Answer 8

can you look at the problem please i attached it click on the link

Answer 9

thanks for helping me btw!