Nilai \( \displaystyle \lim_{x \to 4} \ \frac{x^2-16}{x-4} = \cdots \)
- 16
- 8
- 4
- -4
- -8
(UN SMA IPS 2015)
Pembahasan:
\begin{aligned} \lim_{x \to 4} \ \frac{x^2-16}{x-4} &= \lim_{x \to 4} \ \frac{(x-4)(x+4)}{x-4} \\[8pt] &= \lim_{x \to 4} \ (x+4) \\[8pt] &= (4+4) =8 \end{aligned}
Jawaban B.