Posted by haifeng on 2021-12-18 22:33:27 last update 2021-12-18 22:33:27 | Answers (1) | 收藏
计算定积分
\[\int_{0}^{\frac{\pi}{4}}\frac{1-\sin 2x}{1+\sin 2x}\mathrm{d}x\]
[Hint]
利用 $\int_0^a f(x)\mathrm{d}x=\int_0^a f(a-x)\mathrm{d}x$.
