Show that has infinity many critical points.
I've got the formula of the tangent plane to be where a and b are the points they touch the surface, so they too are variables.
Last edited by superdude; Sep 24th 2009 at 07:54 PM.
Show that has infinity many critical points.
I've got the formula of the tangent plane to be where a and b are the points they touch the surface, so they too are variables.
If you set the partial derivatives equal to zero, as a system, you should see that there are infinitely many solutions.
It's the set of all points 3-dimensional space such at x=-y.
I hope this helps.