Matrix multiplication

• Nov 7th 2009, 08:40 AM
sf1903
Matrix multiplication
I need some guidance here...
Attachment 13728
How do I multiply these three?

I only know how to multiply when it looks like this...
Attachment 13729
But I cant figure out how to do with the one above. Plz help(Itwasntme)
• Nov 7th 2009, 08:59 AM
Defunkt
Quote:

Originally Posted by sf1903
I need some guidance here...
Attachment 13728
How do I multiply these three?

I only know how to multiply when it looks like this...
Attachment 13729
But I cant figure out how to do with the one above. Plz help(Itwasntme)

Remember that $ABC = (AB)C = A(BC)$. So you can either first multiply the first two and then multiply the result by the third, or first multiply the last two and then multiply the result by the first.
• Nov 7th 2009, 09:50 AM
Prof Paulo