Question

Porque no final o (2-y) virou (y-2)?

Answer 1

Não era pra ter virado (y-2).

$\lim_{z \to \ 2-y} - (z^2/2) \lim_{z \to \ 2-y} - ((2-y)^2/2) \lim_{z \to \ 2-y} - \frac{1}{2} (2-y)^2$