Posted by haifeng on 2015-02-05 13:43:22 last update 2015-02-05 13:43:22 | Answers (1) | 收藏
求极限
\[ \lim_{x\rightarrow 0}\frac{6e^{-x^2}\sin x-x(6-7x^2)}{3\ln\frac{1+x}{1-x}-2x(3+x^2)} \]
