本次共计算 1 个题目:每一题对 x 求 1 阶导数。
注意,变量是区分大小写的。\[ \begin{equation}\begin{split}【1/1】求函数\frac{-(arctan(x))}{x} - ln(x{\frac{1}{(1 + {x}^{2})}}^{\frac{1}{2}}) - \frac{{(arctan(x))}^{2}}{2} 关于 x 的 1 阶导数:\\\end{split}\end{equation} \]
\[ \begin{equation}\begin{split}\\解:&\\ &原函数 = \frac{-arctan(x)}{x} - ln(\frac{x}{(x^{2} + 1)^{\frac{1}{2}}}) - \frac{1}{2}arctan^{2}(x)\\&\color{blue}{函数的第 1 阶导数:}\\&\frac{d\left( \frac{-arctan(x)}{x} - ln(\frac{x}{(x^{2} + 1)^{\frac{1}{2}}}) - \frac{1}{2}arctan^{2}(x)\right)}{dx}\\=&\frac{--arctan(x)}{x^{2}} - \frac{(\frac{(1)}{(1 + (x)^{2})})}{x} - \frac{((\frac{\frac{-1}{2}(2x + 0)}{(x^{2} + 1)^{\frac{3}{2}}})x + \frac{1}{(x^{2} + 1)^{\frac{1}{2}}})}{(\frac{x}{(x^{2} + 1)^{\frac{1}{2}}})} - \frac{1}{2}(\frac{2arctan(x)(1)}{(1 + (x)^{2})})\\=&\frac{arctan(x)}{x^{2}} - \frac{1}{(x^{2} + 1)x} + \frac{x}{(x^{2} + 1)} - \frac{1}{x} - \frac{arctan(x)}{(x^{2} + 1)}\\ \end{split}\end{equation} \]你的问题在这里没有得到解决?请到 热门难题 里面看看吧!