# Math Help - I need complete solution fast.

1. ## I need complete solution fast.

-2 4 -6 2
Let A= and B= find each of the following.
0 3 4 0

-2A+4B

2. Originally Posted by norwoodjay
-2 4 -6 2
Let A= and B= find each of the following.
0 3 4 0

-2A+4B
I assume A is the matrix [-2 4 -6 2] and B is the matrix [0 3 4 0] ...
is this correct?

3. Originally Posted by norwoodjay
-2 4 -6 2
Let A= and B= find each of the following.
0 3 4 0

-2A+4B
Is this what you are asking:

A = [-2 4 -6 2}
B = [0 3 4 0]

-2A + 4B = [4 -8 12 -4] + [0 12 16 0] = [4 4 28 -4]

4. A is -2 4 and B is -6 2 both A snd B have Brackets around them.
0 3 4 3

5. Hello,

Code:
  -2  4
A=
0  3
Code:
  -6  2
B=
4  0
-2A means that you multiply each element of A by -2
4B means that you multiply them by 4.

Addition will be adding the elements that are at the same place. For example, A+B will give
Code:
-2-6   4+2
0+4   3+0