6.56.1  Matrix of a system: syst2mat

The syst2mat command turns a system of linear equations into its augmented matrix. (For this command, the augmented matrix of Ax=b has the column vector −b glued to the right of A.)

• syst2mat takes two as arguments:
  • eqns, a list of the equations or expressions (assumed to be equal to zero) of a linear system.
  • vars, a list of the variable names.
• syst2mat(eqns,vars) returns the augmented matrix of the system.

Warning !!!
The variables must be purged before syst2mat is called.

Examples.

• Input:
  syst2mat([x+y,x-y-2],[x,y])
  Output:

  ⎛ ⎜ ⎝ 1 1 0 1 −1 −2 ⎞ ⎟ ⎠

• Input:
  syst2mat([x+y=0,x-y=2],[x,y])
  Output:

  ⎛ ⎜ ⎝ 1 1 0 1 −1 −2 ⎞ ⎟ ⎠