48/50 Linear System Solver

[Tim Wessman]

Have someone with a complaint about the linear system solver on the 48 series (50g specifically).

x - 5y + 4z = -3
2x - 7y + 3z = -2
-2x + y + 7z =-1

Now he knows these are dependent, but the concern is that instead of giving "no solutions" it returns

x = -0.04869...
y = 0.25937...
z = -0.221295...

In looking at the old 48 manual, it talks about the linear solver in 18-11 where it talks about 3 different cases.

[attachment=294]

I am curious as to where exactly these numbers are coming from. Anyone know which case, or what they are supposed to represent? Or is this an artifact of some lower level matrix routines?

The output of the LINSOLVE command is interesting, where it returns a '1=0' as the Z solution. :-)