Linear systems

 

In Derive

For comparison with other CAS choose from: Axiom Macsyma Maple Mathematica Reduce

inputs outputs

     [2 x + y + 3 z - 9, x - 2 y + z + 2, 3 x + 2 y + 2 z - 7]

     [2 x + y + 3 z - 9, x - 2 y + z + 2, 3 x + 2 y + 2 z - 7]


     [x = -1, y = 2, z = 3]