Eval

[Pedro]

Hi,

Great program. Is missing a "f" in the eval function. I try eval(pi), returns pi. Meanwhile, evalf(pi) returns an aproximate value.

It doen's integrate the coth(x). Why?

Thanks,

Best regards,
Pedro

[Pedro]

Acording http://integrals.wolfram.com/index.jsp?expr=coth%5Bx%5D&random=false

the function mention above is integrateble.

Best regards

[MrMage]

eval does what it should. For exact values, use the ~~ symbol on the Numeric page, which actually corresponds to evalf. And about coth(x): I suppose xcas just isn't mathematically capable of solving the integral... nothing I can do about that, but you can write Mr. Parisse (http://www-fourier.ujf-grenoble.fr/~parisse/giac.html) and ask him if he could improve the integration system.