Okay, so I have the following two equations of curves:

So am I correct in stating that the Domain of 1 is:-1 < x < 1and Domain of 2 is:x ≤ -1 or x ≥ 1?

Okay, so once I figure this out, how do I determine the Max and Min points of the graphs? I do the first derivative test for each, and they don't help me. (Luckily, I am able to picture the graphs in my head, so I can determine the minimum point of 1 to be (0,1) and the minumum points of 2 to be (-1,0) and (1,0).

How do I determine these min points algebraically?