Linear Algebra Question

  • Thread starter nycxfalcon
  • Start date
  • #1
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.
 

Answers and Replies

  • #2
Hurkyl
Staff Emeritus
Science Advisor
Gold Member
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19
This sounds like a straight forward problem of applying the definitions...
 
  • #3
anyone please help me i am having a lot of trouble with the topic
 
  • #4
Hurkyl
Staff Emeritus
Science Advisor
Gold Member
14,950
19
Have you tried applying the definitions? Where do you get stuck?
 

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