On Tue, Aug 4, 2009 at 7:44 PM, Aaron S. Meurer wrote:
>
> I have worked around with Mul and Add, so I know pretty well how they
> work, but I haven't worked with Symbol as much. Ondrej and others who
> wrote the core will know much better. Also, is there a specific class
> that you are consider
I have worked around with Mul and Add, so I know pretty well how they
work, but I haven't worked with Symbol as much. Ondrej and others who
wrote the core will know much better. Also, is there a specific class
that you are considering if it should be a subclass of Symbol?
Aaron Meurer
On
maxima:
(%i1) 4*%pi^2*f^2*fn^4*(fn^2+9*f^2)/(fn^2+f^2)^3;
(%o1) (4*%pi^2*f^2*fn^4*(fn^2+9*f^2))/(fn^2+f^2)^3
(%i2) integrate(%, f, minf, inf);
Is fn positive, negative, or zero? positive;
(%o2) 14*%pi^3*fn^3
sympy:
fn=Symbol('fn', positive=True)
4*pi**2*f**2*fn**4*(fn**2+9*f**2)/(fn**2+f**2
