help with my HP prime

[toshk]

I have the same issues in with matrices in electrical circuits where the resistors/ impedances tends to be in orders of mega ohms.... and inductance in milli and capacitance in orders on nano.
Another way to avoid zeros as the answer is to scale the A matrix. (Ax=b). or normalize the A matrix hence putting the A matrix in unity. (k*Ax=b) where k is a scalar.
in your case k=1e11 and new A=[[5 6],[6 12]]. and x=(1/k)*(b/A). As close you get in with your linear equations use any of the over-abundantly ways of solving equations in Prime.
http://www.hpmuseum.org/forum/thread-724...t=linsolve
hopefully Hp will fix the issue.