題目 Problem (10 pts) Evaluate the following limits if they exist. (a) limn→∞3n+22n+1\lim_{n \to \infty} \dfrac{3n+2}{2n+1}limn→∞2n+13n+2 (b) limx→0cos(2x)−1x2\lim_{x \to 0} \dfrac{\cos(2x)-1}{x^2}limx→0x2cos(2x)−1 解答
