Difference between Real and Virtual Calculator

[simone_71]

Quote:If you don't need the solve app, I'd recommend using the FNROOT command which is the correct global root finder.

I checked in the manual, but the explanation of this command is very poor. My equation have many variables and needs to be solved for two of them, according to the requirements. can you, if you can, make an example?
Because i don't really need to solve the equation in the solve app, i just need to solve it ;-)
moreover i repeat my question: why the same code is working in my real calculator and is not working in the virtual?
Maybe some wrong setting? If yes, where I can check?