Gc1991 said:How to I solve the following for K?
x+y+4z+-2
x+2y-5z+1
3x+7y+kz+7
when I use a matrix I tend to get down to
1 0 13...-5
0 1 -9...3
0 0 24+k...1
Then Im lost
According to your question, only 3rd equation is required; assuming you mean =7:Gc1991 said:How to I solve the following for K?
x+y+4z+-2
x+2y-5z+1
3x+7y+kz+7
How to I solve the following for \(\displaystyle k\)?
. . \(\displaystyle \begin{array}{ccc}x+y+4z &=&-2 \\ x+2y-5z &=& 1 \\ 3x+7y+kz &=& 7 \end{array}\)
When I use a matrix, I tend to get down to:
. . \(\displaystyle \left| \begin{array}{ccc|c} 1& 0 &13 & \text{-}5 \\ 0 & 1 & \text{-}9 & 3 \\ 0 & 0 & 24+k & 1 \end{array}\right|\) . RIGHT!
Then I'm lost.