lim(n→∞)3n^2/n^2-3=3如何证

问题描述:

lim(n→∞)3n^2/n^2-3=3如何证

lim(n→∞)3n^2/(n^2-3)
=lim(n→∞)6n/2n (洛必哀塔法则,上下求导)
=3