Thread: level curves

I have this question for you..


Sketch the level curves of z = x² - 2y + 6 / 3x² + y at heights z = 0 and z = 1.


I know it involves 'simply' substituting z for 0, and again z for 1.
But I'm not having the outer most confidence with my outcomes..

Can you help?

Looks like one of your classmates got here first.

Sketching level curves and the surface of a sphere

Also this problem has nothing to do with "differential equations" and should not be in this forum.