Solving for equations the HP50, 49.. way.

[Luigi Sardella]

Sure did I try the solver app; but I did not find it as useful as I would like. I have little use of ten equations, or expressions, named E1..E10. To be clear, let's suppose I want an equation for LC resonant circuits. With the RPN calculator I make so:

'freq = (1/pi) / sqrt(induct*capac)'
ENTER
'LC_eqn'
ENTER
SWAP
STO

and then I can use this equation inside a program, and solve it for one of its variables using ROOT; or I solve it with the solve_equation app.
Thanks for Your attention.