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摘要: 计算:\(\int_0^\pi \sin^6x\cos^2xdx\) 首先有: \[ \int \sin^6x\cos^2 x dx=\int (\sin^6x-\sin^8x)dx \\ \] 其次: \[ \begin{aligned} I_n =&\int \sin^ndx \\ =&-\in 阅读全文
posted @ 2021-11-28 13:01 nekko 阅读(82) 评论(0) 推荐(0)