windows适配。

This commit is contained in:
unlockable
2022-12-06 23:33:04 +08:00
parent 3cbde21116
commit 3ecec5ed19
3 changed files with 12 additions and 11 deletions

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@@ -141,7 +141,7 @@
$a^2 = q - \dfrac{q^2}{4}$,再做换元$u = x + \dfrac{p}{2}$,可以得到
\[\int \frac{Ax + B}{(x^2 + px + q)^k} \dif x = A \int \frac{u}{(a^2 + u^2)^k} \dif u + \left(B - \frac{Ap}{2}\right) \int \frac{\dif u}{(a^2 + u^2)^k}\]
前面的积分容易求得,因此只需讨论
\[I_k = \int \frac{\dif x}{(a^2 + u^2)}\]
\[I_k = \int \frac{\dif x}{(a^2 + u^2)^k}\]
做分部积分
\begin{align*}
I_k & = \frac{u}{(a^2 + u^2)^k} + 2k \int \frac{u^2}{(a^2 + u^2)^{k+1}} \dif u\\