> It looks like what you want is the > real domain where the the function takes on real values.
That's exactly what I want. Is there a way to find the real domain numerically using sympy? On 14 Sep., 17:25, Aaron Meurer <[email protected]> wrote: > As far as I know, that information is not stored, though it would be a > nice feature. > > In SymPy, functions are complex by default, so functions like sqrt() > are actually defined everywhere. It looks like what you want is the > real domain where the the function takes on real values. > > Actually, in order to work in the general case, it would need to be > able to compute the domain of a function given a specific range, too. > That way, you could compute the domain of a nested function (like > acoth(sqrt(x))). > > Aaron Meurer > > > > > > > > On Wed, Sep 14, 2011 at 8:30 AM, dennis <[email protected]> wrote: > > Hi, > > > is it possible to get the domain of definition of a function with > > sympy? > > (http://en.wikipedia.org/wiki/Domain_of_a_function) > > > For example: > > domain(\sqrt(x)) -> [0, oo] > > domain(\ArcCoth(x)) -> [-oo, -1] and [1, oo] > > > -- > > You received this message because you are subscribed to the Google Groups > > "sympy" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group > > athttp://groups.google.com/group/sympy?hl=en. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
