SOLUTION: PLEASE HELP ME!!!! I need help because i am confused i am not getting this please explain these two problems step by step so i can refocuse on what i have to do....If someone ha

Question 89489: PLEASE HELP ME!!!!
I need help because i am confused i am not getting this please explain these two problems step by step so i can refocuse on what i have to do....If someone has afew thank i really appreciate all your help...
Problem #1
(*I used the underscore to separate the numbers*)
find the inverse, if it exists, for the matrix
-2_1_3
3_-1_2
-4_2_0

Problem #2
Solve the matrix equation AX=B for X by finding A to power
* Matrix A is a 3X3
A =
2_-1_3
-3_4_-5
-4_0_6
and matrix b is a 3X1 B=
9
6
-9
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Problem #1
(*I used the underscore to separate the numbers*)
find the inverse, if it exists, for the matrix
-2_1_3
3_-1_2
-4_2_0
--------.........[-4...6...5]
Inverse = (1/6) [-8..12..13]
.................[2....0..-1]
I'll let you do the work to show that is correct.
=====================
Problem #2
Solve the matrix equation AX=B for X by finding A to power
* Matrix A is a 3X3
A =
2_-1_3
-3_4_-5
-4_0_6
and matrix b is a 3X1 B=
9
6
-9
-------
A^(-1)B = [5.43]
..........[8.22]
..........[2.12]
===================================
Cheers,
Stan H.
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