Subject: show gradient vectors orthogonal to level curves
From: Jaime Villate
Date: Wed, 21 Oct 2009 18:48:16 +0100
On Qua, 2009-10-21 at 18:31 +0100, Jaime Villate wrote:
> I am trying to demonstrate that gradient vectors are orthogonal to
> > contour lines.
> Please try the following:...
You can also get the plot you want with the following command:
ploteq(y^2-x^2,[x,y],[x,-3,3],[y,-3,3],[vectors,"blue"]);
and then click on a few points.
Jaime