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# Matrices Topics

#### Matrix Operations

What are we going to do with these matrices now that we've made them our faithful servants? Here's what. We are going to use them to solve equations. We'll add them, we'll subtract them, a...

#### Adding and Subtracting Matrices

Adding, Subtracting, and Matrices, Oh My!It's simple to add and subtract matrices, but they must always be the same size for it to work. The answers are always the same size too. Check it out:All y...

#### Multiplying Matrices

Since we are so awesome at adding and subtracting matrices—not to mention Cramer's Rule—it's time to double our pleasure and double our fun with multiplication. Press on.

#### Identity and Inverse Matrices

Inverse Matrices
At this point you may be wondering why the fourth of the Four Horsemen of the Math Apocalypse, division, seems to be getting overlooked. Well, the fact is that you cannot...

#### In the Real World

Let's say you're working at A & F. You're in charge of shirts, because your manager thinks you have real promise. Don't let her down!First, you're doing inventory of red polo shirts. There are...

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