# Multiplication of 5x5 matrix

1. Oct 30, 2013

### MissP.25_5

Hello.
Can someone show me the step by step method to multiply a 5x5 matrix?

Here, I am required to use boolean algebra, so the answer will end up only having 0 and 1.

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2. Oct 30, 2013

### tiny-tim

Hello MissP.25_5!
Let's take the (1,4) entry …

you combine the 1st row of the 1st matrix with the 4th column of the second matrix:

(0 1 1 0 0) and (0 1 0 0 1) …

that's 0*0 + 1*1 + 1*0 + 0*0 + 0*1 = 1

ok, now you try some of the others, and show us what you get (or where you're stuck)

3. Oct 30, 2013

### Staff: Mentor

Have you seen the following method for visualizing the multiplication? It should help you to understand how to do matrix multiplication in general. Now please show your work -- you know that you need to show effort before we should offer tutorial help on schoolwork...

http://www.texample.net/media/tikz/examples/thumbs/matrix-multiplication.jpg

4. Oct 30, 2013

### Staff: Mentor

That's an interesting diagram. I like it!