2009/6/13 Florian Beutler <florian.beut...@gmx.de>:
>
> Hay
> I am a bit annoyed by sage... I just want to print a function two
> times and sage gives me an error... this is the first script
> --------------------------------------------------------------------------------------------------------
> #!/usr/bin/env sage -python
> import sys
> from sage.all import *
>
> import functions
> from functions import *
>
> grav_const = 4.3e-06
> pi = 3.14159265358979323846
> sat_mass = 200000.
>
> print "Ok... dann legen wir mal los!\n"
> print "step1: definition of the density profile"
>
> r = 0.08
>
> print rho(r),"\n"
>
> print "step3: definition of the integrated mass"
>
> print mass(r).n(),"\n"
>
> print "step3: definition of the integrated mass"
>
> print mass(r).n(),"\n"
> --------------------------------------------------------------------------------------------------------
> the function definition is the following
> --------------------------------------------------------------------------------------------------------
> import sys
> from sage.all import *
>
> def rho(r):
> return 1.32419e+08/(1.+(r/0.81))**3
>
> def mass(r):
> pi = 3.14159265358979323846
>
> x=var('x')
> assume(x>0)
> i_term = integral(x**2*rho(x), x, 0, r)
>
> return i_term*4.*pi;
> --------------------------------------------------------------------------------------------------------
> so I just try to plot the mass two times... the error message of sage
> is not very helpful (at least to me)
> thanks for any help
> florian
The error message might be helpful to somebody besides you, so perhaps
you could post the error message here?
William
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