Question

Which of the following systems of linear equations

Answer 1

Do the matrix multiplication and tell me what you get.

Answer 2

-2x + 4y = -8
4x - 8y = -2 @ranga

Answer 3

-2x + 5y = -10
5x - 7y = -2

Answer 4

I have one other question if you don't mind?

Answer 5

go ahead.

Answer 6

are you going to type the question?

Answer 7

@ranga What is the multiplicative identity matrix for the matrix shown below?
http://oi44.tinypic.com/1zcjmeo.jpg

Answer 8

1 0 0
0 1 0
0 0 1

Answer 9

@Coolsector thanks!

Answer 10

@Coolsector could you show me how you got it?

Answer 11

http://en.wikipedia.org/wiki/Identity_matrix
please read here
identity matrix will always be square and have 0 everywhere except 1 s on the diagonal
the size of the matrix depends on the matrix that you multiply it by