iran-konkur 2014 Q116

iran-konkur · Other · konkur-riazi_1393 Not Maths
116. If $\displaystyle\lim_{x \to 3} \dfrac{x-4}{2x^2+ax+b} = -\infty$, then $a+b$ is equal to:
(1) $-3$ (2) $3$ (3) $6$ (4) $12$
\textbf{116.} If $\displaystyle\lim_{x \to 3} \dfrac{x-4}{2x^2+ax+b} = -\infty$, then $a+b$ is equal to:

\medskip
(1) $-3$ \hfill (2) $3$ \hfill (3) $6$ \hfill (4) $12$

\medskip