Topic: Parametric functions gone haywire
The attached file is from an old version (sorry, can't tell you which as the disc won't boot).
There was no problem with the old graph.
It has been stripped down to just the bare essential problem : vertical lines.
On my screen, the height of the red vertical lines do not correspond to their set values.
I was going to say they were non-linear, but if the Y-axis limit is changed (e.g. from 8 to 9)
that is far too simplistic: the relative heights seem unpredictable.