Matrix (I think) question

I'm reading and learning through a finals exam for what I will be learning next year (I'm usually a year ahead) and there's a question:

A). Find the transpose of the matrix A

http://i.imgur.com/MEWDtOI.png

B). *Show that *

I think this is related to matrices but I'm not sure what the question begs at all. I'm not sure if that's a I or l on the end of the equation either. No values seem to be given for this I/l.

Re: Matrix (I think) question

Do you know the definitions of transpose and inverse matrices? These are just simple operations, for the transpose you just interchange rows and columns.

If then you can find the inverse using the formula:

where,

So once you use that *plug-and-go* formula you just multiply the two matrices... if you multiply in opposite order it will be the same, which will be which is what they're asking you to demonstrate.

Re: Matrix (I think) question

Quote:

Originally Posted by

**adkinsjr** Do you know the definitions of transpose and inverse matrices? These are just simple operations, for the transpose you just interchange rows and columns.

If

then you can find the inverse using the formula:

where,

So once you use that

*plug-and-go* formula you just multiply the two matrices...

if you multiply in opposite order

it will be the same, which will be

which is what they're asking you to demonstrate.

Great! Thanks!