Hi Cristóvão! On 24 Okt., 00:50, Cristóvão Sousa <cris...@gmail.com> wrote: > But, is there any way of round reals even if they are inside a symbolic > expression?
I guess it would be needed to define a recursive function for that purpose, using operator and operands of a symbolic expression. Such as: sage: def symround(x, ndigits=0): ....: if hasattr(x,'operator') and x.operator(): ....: return x.operator()(*map(lambda y:symround(y,ndigits=ndigits), x.operands())) ....: try: ....: return round(x,ndigits=ndigits) ....: except TypeError: ....: return x ....: sage: sr = (1.01*x^2+(0.1*0.1-0.01)*x)*2.0001*sin(3.01*x) sage: sr (2.02010100000000*x^2 + (3.46962042430121e-18)*x)*sin(3.01000000000000*x) sage: symround(sr) 2.0*x^2.0*sin(3.0*x) sage: symround(sr,ndigits=10) 2.020101*x^2.0*sin(3.01*x) There might be ways to do it more efficient, though. I don't know. Cheers, Simon -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
