[thechat] Tangent with a Curve

Lachlan Cannon luminosity at members.evolt.org
Sat May 4 03:59:00 CDT 2002

\aardvark\ said:
> just what are you building?
> anyway, you don\'t do it by hand... if you\'re a drafting monkey (and i
> used to be a damn fine one), you get yourself a french curve and a
> triangle -- at the very least... t-square should be a requirement, but
> if you\'re just playing...
> anyway, get some drafting gear, then you\'ll be able to do whatever you
> want (asymptotic curves, realistic perspective, whatever)...

Or work out the derivative of the point you want a tangent for, sub the
derivative of the point and the x and y co ords into y=mx + c, and draw your
line from that. Though since you can work out the derivative straight off,
one wonders why you'd need to draw the tangent line?


More information about the thechat mailing list