echelon matrix with variable leading entry

vect0r said:

Hi,

I have the following question which I cannot comprehend, any help/solution would be greatly appreciated.

Matrix:

h -2 6 4
0 (h+1) (h-3) 3
0 0 (h*h-4) (h-2)

and the question posed is: "This matrix is not in echelon form for all values of h. Which values of h are unmissable for solving whether or not the augmented matrix is in echelon form?"

Regards,

Linear Algebra student

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