Chapter 1 - Limits and Continuity - 1.2 Computing Limits - Exercises Set 1.2 - Page 69: 22

$\lim\limits_{y \to 6^{-}}\frac{y+6}{y²-36}$ = $-\infty$

y² - 36 = (y + 6)(y - 6) $\frac{y+6}{y²-36}$ = $\frac{1}{y-6}$ $\lim\limits_{y \to 6^{+}}\frac{y+6}{y²-36}$ = $\lim\limits_{y \to 6^{-}}\frac{1}{y-6}$ = $\frac{1}{0^{-}}$ = $-\infty$