Hi

I need help in solving a question involving row operations by converting the equations in a matrix.

i have attached the question

thank you

(Wink)

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- May 30th 2009, 08:42 AMrpatelRow operations to solve a system of equations
Hi

I need help in solving a question involving row operations by converting the equations in a matrix.

i have attached the question

thank you

(Wink) - May 30th 2009, 12:17 PMNonCommAlg
write the augmented matrix of the system and do the row operations until your matrix is in an echelon form, which is: $\displaystyle \begin{bmatrix}1 & 1 & 1 & | & 1 \\ 0 & -1 & -3 & | & -1 \\ 0 & 0 & a-4 & | & 0 \end{bmatrix}.$ you should be able to finish the proof now.