We have been going over algebra 2 stuff in math and i have to say it is pretty easy. This week we learned about matrices, which is beyond easy. We also started the online math work.
So, when you are multiplying matrices, the dimensions of both matrices have to have the same numbers in the middle. Also when multiplying matrices, you go row by column. Ex. 2 x 2 2 x 2
If those two numbers match, then the two outer numbers will give you what the dimensions of the final matrix will be. Ex. 3 x 2 2 x 3 - Now you will end up with a 3x3 matrix.
We also learned about Cramer's rule: I think that d stands for the determinant or something like that.
dx/d
dy/d
dz/d
So, overall, this algebra 2 review has been pretty easy. The matrix chapter is probably the easiest one that we have done all year.
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