On Mar 23, 8:57 pm, Robert Bradshaw <rober...@math.washington.edu>
wrote:
> Do you mean something likehttp://trac.sagemath.org/sage_trac/ticket/
> 3813 , and if so, why isn't this used by default?

Ya thats for plot, I think we need a slightly different approach for
parametric_plot.
The common demand is that the curve shall look smooth where it is
smooth.
Verification example can be
parametric_plot((lambda x: arctan(x),lambda x: arctan(x)**2),
(-1000,1000))

Implementation: insert points so long until the angles at each point
only slightly deviate from 180deg, or (in the case of a kink) until
the points are close enough. 0.1rad is a well looking maximum
deviation from 180deg.

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