Okay, so this is what I came up with:
The result is this figure:
title('Exercise 8.2 by Brent Daniels')
This doesn't seem right, though. since this figure is essentially a level curve of . Therefore, shouldn't all the normal vectors on the lower halves of the two branches be pointing in the opposite direction? Or is my code/approach wrong? Thanks.
Edit: Nevermind, I'm an idiot and found my mistake. What essentially I was plotting was instead of . Thanks again.