Greek letters for variable names

[XcasEngGuy]

I can't find any information in the Xcas manual about using greek letters for variable names. I know that some are available, like sigma. Is there a way to use the letter Epsilon?

Matt

[lukamar]

"epsilon" and "Gamma" (uppercase gamma) are built-in function names, so they can't be used as symbols. If I'm not mistaken, all other greek symbols which are different from Latin letters (alpha, beta etc.) are available. If you want to use epsilon as a symbol you may use:

Code : Tout sélectionner

eps:=make_symbol("epsilon")

So "eps" will be printed as the greek letter.

[XcasEngGuy]

thanks! exactly what I needed

Matt

(edit) Oops, it didn't work. The initial command works, but when you use the variable it gets evaluated to 1E-12.

[parisse]

You can still run eval(eps,1). But that's a little bit tricky...