I would say the main point idea
The antagonist is always the person (or people) who oppose the protagonist, so the antagonist would try to take down or stop the protagonist from achieving his/her goals
C. The lovers are in love with the right person because of magic, but they still need Theseus to approve of their plans to marry.
F(x) = (sqrt(29 + x) - x) / (x + 4)
a = -4