> This is actually a problem with how the symbolic functions/expressions
> are handled. The find_root function cannot recognize that 1/z is a
> function. This works:
>
> sage: z = 1/tan
> sage: f = lambda x: z(x)
> sage: find_root(f,1, 2)
> 1.5707963267948968
>
> and this:
>
> sage: find_root(z(x)
On Thu, 28 Aug 2008 13:36:53 -0700 (PDT)
kcrisman <[EMAIL PROTECTED]> wrote:
>
> The reciprocal of tangent is not a constant function, but Sage says
> otherwise. This is now http://trac.sagemath.org/sage_trac/ticket/3980
> .
>
> (Incidentally, using z(x)=tan(x) also doesn't work, as it yields
