Question

Evaluate: [1 -6][1 4]
[2 0][9 8]

Answer 1

This is simple. Try yourself..:)

Answer 2

do i multiply?

Answer 3

Yes matrix multiplication.

Answer 4

Can we carry out such an operation? Refer your previous question.

Answer 5

1x1..-6x4..?

Answer 6

\[\left(\begin{matrix}1 \\ 4\end{matrix}\right)\left[\begin{matrix}1 & 6\end{matrix}\right] \]

Answer 7

is the matrix are like this?

Answer 8

For example, you may put the following answer down for a 2 x 2 matrix.

row 1 column 1 = 4

row 1 column 2 = 5

row 2 column 1 = 0

row 2 column 2 = -1

Answer 9

if it's a 1x2 * 2x1 matrix you can multiply as you said. In question you've shown like 1x2* 1x2 matrix.

Answer 10

ok..can you hold on so i can show you what i got?

Answer 11

Ok.

Answer 12

[1 -24]
[18 0]

Answer 13

ok..?

Answer 14

was i wrong?

Answer 15

There is a difference between [1 -6][1 4] and what I've shown in the fig. In the fig it's 1x2 * 2x1 matrix and what you've written in your question is 1x2*1x2 multiplication. Which is not possible. If the matrix are 1x2* 2x1 then answwer to the first question is [-24]. Hope it helps.

Answer 16

For further info you can refer this web.. http://www.mathwarehouse.com/algebra/matrix/multiply-matrix.php

Answer 17

you can note this is a linear combination 1 times firs row,-6 times second rown

Answer 18

I was trying to post some matrices earlier but failed