Posted by haifeng on 2015-03-09 09:21:55 last update 2021-01-06 19:39:43 | Answers (1) | 收藏
求极限
\[ \lim_{x\rightarrow 0}\dfrac{\int_0^x\arctan(x-t)dt}{\sin(3x)\ln(1+2x)} \]
