Prom is next saturday:D but im sure you guys already know :) im kinda excited about it too. But anyways,I cant seem to find my chapter six notes so ill blog about something we did a while back. Matrices, yayyy. Just like every other area of advanced math, matrices are tedious.
Here are the matrices rule:
When adding matrices, they must be of the same dimensions. The same goes for subtracting
Ex. A 4x3 matrices can only be added to a 4x3 matrices
When multiplying matrices, you can only multiply matrices that have the same columns and rows.
Ex. 3x3* 1x2 the column of the first are equal to the rows of the second.
You cannot technically divide a matrices, to "divide" a matrices, you simply multiply by the inverse..
finding the inverse.
0 1
1 0 = 0-1=-1 = 1/-1* 0 1
1 0 = 0 -1
-1 0
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