Linear Algebra Question

[nycxfalcon]

Hi,

I am having so much trouble with this problem, if you can help with in any way possible I will truly appreciate it. This problem deals with Linear Algebra, most important matrices.

Here is the problem,

A=

1 7 2

2 9 -4

5 11 6


B=

1 8 2

3 10 4

5 -12 6

Calculate

(a) (AB)32

(b) (BA)21

(c) the transpose of B

(d) if (A -1)31 = (1/det(A))W , find det (A) and W

Any help will do. Thank you for you for your time.

[Hurkyl]

This sounds like a straight forward problem of applying the definitions...

[nycxfalcon]

anyone please help me i am having a lot of trouble with the topic

[Hurkyl]

Have you tried applying the definitions? Where do you get stuck?