Quanatative Analysis Matrix Hep

[WilltheThrill]

Here's the problem:

Let the 2 x 2 matrix A = -2 0 and the 2 x 2 matrix B = 0 2 5 3 4 -6
Find a matrix X satisfying the equation 3X =A – 3B

 

[tkhunny]

It's element by element addition. Of course, you will first need to decide why A has two missing elementes and B has two spares.

 

[rbcc]

To expand on that

A 2x2 matrix means 2 rows and 2 columns

so it should look like this

A=
a b
c d

and B should be the same.

Once you have that solved then you can do this 3X =A – 3B

so in general

A=
a b
c d

B=

e f
g h

3B=

3e 3f
3g 3h

and

A-3B=
a-3e b-3f
c-3g e-3h

then divide by 3

and you got it ...I think