Matrices Operations

The info in this powerpoint came from coolmath.com

http://www.coolmath.com/algebra/24-matrices/01-whats-a-matrix-01

Make sure that you take notes and write down examples.

What is a matrix?

Make sure that you know the dimensions of a matrix!!!

1.

2.

1 x 4

2 x 5

3 x 3

A.

B.

C.

-21710-8

D.

Adding and Subtracting Matrices

1.

2.

(-5)12 60 87

09- (-4)8 )3(5

7 6 15

9- 4 8

A.

13- 8

4- 3

NOT POSSIBLEB.

C.

Scalar Multiplication

1.

2.

YOU TRY:

14 6

8- 0

7 3

4- 02

7 4-

3 6

+

A. B.

+2 5 -3-

11 7

1 8

46- 1

63 42

C. D.