On Sep 19, 10:33 am, Burcin Erocal <[email protected]> wrote:
> On Fri, 18 Sep 2009 15:47:45 -0700 (PDT)
>
> Defining a function psi, similar to the way arctan2 is defined in line
> 422 of sage/functions/trig.py should fix this.
What is the location from Sage's root directory of the files used by
Sage? I found several locations of sage/functions/trig.py.
I found in the pdf of the reference manual that psi can be numerically
calculated by using PARI (for example, pari(2.2342).psi()), but it
still cannot be used symbolically or used to plot until the function
psi is defined.
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