S.O.S. Mathematics CyberBoard

[dcfan]

Hello all...

I have this matrix A:

-1;2-m;m-3 square matrix 3x3
-1;-1;-2
m;3;2


1.Show (proof) that A is reversable if and only if m is not {1,3}

2. Solve equation AX = 0 in M3,1 in function of m

3. Deduct of it the solution of equations in function of m

Thx for the help, I tried Gauss-Jordan simplification but I am not able to simplify enough

[dcfan]

well nobody can do this?

[Nona M.]

I think you mean the matrix to be as follows:

. . . . .

But I'm afraid I'm not clear on the rest. Does "proof" mean "prove"? What is meant by "reversible"? What does the "{1,3}" notation indicate? What is meant by solving a matrix equation "in function of m"? What is the meaning of part (3) of the exercise?

When you reply, please include a clear listing of your steps and reasoning so far. Thank you!

[Matt]