Question

Evaluate C - D.
(Image attached.)

Answer 1

???

Answer 2

Exactly the same just subtract...?

Answer 3

I don't even understand how to do it though..

Answer 4

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

Answer 5

Those are just the variables ash2326

Answer 6

Kaup Kel use this to evaluate the matrix subtraction, Did you get it?

Answer 7

I really really just need to learn from scratch how to do this. I don't even know what matrix is....

Answer 8

I'll show you
\[\left[\begin{matrix}7 & 11 \\-15& 3\end{matrix}\right]-\left[\begin{matrix}1 & 0 \\4& \frac{-11}{2}\end{matrix}\right]=\left[\begin{matrix}(7-1) & (11-0) \\(-15-4)& (3- \frac{-11}{2})\end{matrix}\right]\]

Answer 9

Kaupkel did you understand this??

Answer 10

Not at all, but that's okay. You tried to help me, and I appreciate it. I just don't know what I'm going to do. This is all new to me.

Answer 11

Let me give you an idea of matrix

Answer 12

Okay.

Answer 13

Matrix is a rectangular array of numbers or variables . The numbers are called elements of matrix.
See this is a matrix with 4 elements a, b, c, d
\[\left[\begin{matrix}a & b \\c& d\end{matrix}\right]\]

Answer 14

Did you get this?

Answer 15

Yes.. so far(:

Answer 16

Now matrix has rows and columns, in the example I showed you, it has 2 rows and 2 columns.