solution of equations with constraints HP 50g

[roem76]

You could use ASSUME (and UNASSUME).

Example with ASSUME:
'X>0'
ASSUME
MSGBOX: Replacing strict with large inequality
'X>0' is replaced by 'X>=0'
'X^3-3=0'
SOLVEVX
'X=\v/3'

'X'
UNASSUME
SOLVEVX
{ 'X=-\v/3' 'X=\v/3' }

That was done with the HP50G in RPN-mode.

HTH
Roman