You have to put the equations into matrix form first. To do this, each variable has one column in the first matrix and you fill in the co-efficients for the variables. The second matrix has one column and contains all the numbers.
{ 2 -1 1 -1} = Matrix A
{ 1 3 -2 0}
{ 3 -2 0 4}
{-1 -3 -3 -1}
{-1} = Matrix B
{-5}
{ 1}
{-6}
{x=-2} = A*(B^-1)
{y=-.2}
{z=3}
{w=1/6}
I used excel for all my calculation and a helpful tutorial can be found here. I hope this helps and have a nice day!
211 views
Usually answered in minutes!
×