Matrices

This week we learned 14-1 and 14-2. In 14-1 and 14-2 is it all about matrices and how to add, subtract and multiply and determine if they are matrices.

Row and column (row go across and column go up and down)

Examples:
1.
-3{1 4} = {3 12 }
9 6 27 18

2.
-{ 1 1 1] determine row x column= 4x3
1 1 1
0 0 0
2 2 2

3.

A={ 2 6}
8 22 a find a^t
9 16

B. A^t= {2 6}
8 22
9 16

C. { 1 2 }{ 2 4}
4 6 0 1

2x2 2x2

Middle two are the same with you do now
{ 2+0 4+2}
8+0 16+6 ={ 2 6}
8 22


{ 1 2} + {2 0} ={ 3 2}
4 6 5 2 9 8


Basically if u remember everything from last year in algebra 2 it is the same thing and all this is review from last year just know your rule about matrices and you will be fine. Btw my brackets sucked I tried my best making it but oh well hope u like it.