Urgent matrix help please

  • Thread starter Rizzamabob
  • Start date
  • #1
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Main Question or Discussion Point

Ok, i missed the class on finding the inverse of a matrix, and i only have a little bit of an idea on exactly what row operations i can do, when i try to make the matrix = its identity.

Another question im stuck on.
Q.

I have 2 , 3 X 3 matrixs B and C respectivly.
The question is find A if AB=C, and i know B and C
Now, i know i cannot divide matrix's, and im stuck as to what way i should travel to find the matrix A.
Thanks guys ! :shy: :uhh:
 

Answers and Replies

  • #2
TD
Homework Helper
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[tex]AB = C \Leftrightarrow ABB^{ - 1} = CB^{ - 1} \Leftrightarrow A = CB^{ - 1}[/tex]

You only have to find the inverse of B.
 

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