逆三角関数と逆双曲線関数の冪乗積分漸化式
逆三角関数の冪乗積分漸化式
(1)
\[ \int\sin^{\bullet,n}xdx=x\sin^{\bullet,n}x+n\sqrt{1-x^{2}}\sin^{\bullet,n-1}x-n(n-1)\int\sin^{\bullet,n-2}xdx \](2)
\[ \int\sin^{\bullet,n}xdx=\frac{1}{n+1}\sqrt{1-x^{2}}\sin^{\bullet,n+1}x+\frac{1}{(n+1)(n+2)}x\sin^{\bullet,n+2}x-\frac{1}{(n+1)(n+2)}\int\sin^{\bullet,n+2}xdx \](3)
\[ \int\cos^{\bullet,n}xdx=x\cos^{\bullet,n}x-n\sqrt{1-x^{2}}\cos^{\bullet,n-1}x-n(n-1)\int\cos^{\bullet,n-2}xdx \](4)
\[ \int\cos^{\bullet,n}xdx=-\frac{1}{n+1}\sqrt{1-x^{2}}\cos^{\bullet,n+1}x+\frac{1}{(n+1)(n+2)}x\cos^{\bullet,n+2}x-\frac{1}{(n+1)(n+2)}\int\cos^{\bullet,n+2}xdx \](1)
\begin{align*} \int\sin^{\bullet,n}xdx & =x\sin^{\bullet,n}x-n\int\frac{x}{\sqrt{1-x^{2}}}\sin^{\bullet,n-1}xdx\\ & =x\sin^{\bullet,n}x+n\sqrt{1-x^{2}}\sin^{\bullet,n-1}x-n(n-1)\int\sin^{\bullet,n-2}xdx \end{align*}(2)
\begin{align*} \int\sin^{\bullet,n}xdx & =\int\sqrt{1-x^{2}}\sin^{\bullet,n}x(\sin^{\bullet}x)'dx\\ & =\frac{1}{n+1}\sqrt{1-x^{2}}\sin^{\bullet,n+1}x+\frac{1}{n+1}\int x\sin^{\bullet,n+1}x\frac{1}{\sqrt{1-x^{2}}}dx\\ & =\frac{1}{n+1}\sqrt{1-x^{2}}\sin^{\bullet,n+1}x+\frac{1}{(n+1)(n+2)}x\sin^{\bullet,n+2}x-\frac{1}{(n+1)(n+2)}\int\sin^{\bullet,n+2}xdx \end{align*}(3)
\begin{align*} \int\cos^{\bullet,n}xdx & =x\cos^{\bullet,n}x+n\int\frac{x}{\sqrt{1-x^{2}}}\cos^{\bullet,n-1}xdx\\ & =x\cos^{\bullet,n}x-n\sqrt{1-x^{2}}\cos^{\bullet,n-1}x-n(n-1)\int\cos^{\bullet,n-2}xdx \end{align*}(4)
\begin{align*} \int\cos^{\bullet,n}xdx & =-\int\sqrt{1-x^{2}}\cos^{\bullet,n}x(\cos^{\bullet}x)'dx\\ & =-\frac{1}{n+1}\sqrt{1-x^{2}}\cos^{\bullet,n+1}x+\frac{1}{n+1}\int x\cos^{\bullet,n+1}x\frac{-1}{\sqrt{1-x^{2}}}dx\\ & =-\frac{1}{n+1}\sqrt{1-x^{2}}\cos^{\bullet,n+1}x+\frac{1}{(n+1)(n+2)}x\cos^{\bullet,n+2}x-\frac{1}{(n+1)(n+2)}\int\cos^{\bullet,n+2}xdx \end{align*}逆双曲線関数の冪乗積分漸化式
(1)
\[ \int\sinh^{\bullet,n}xdx=x\sinh^{\bullet,n}x-n\sqrt{x^{2}+1}\sinh^{\bullet,n-1}x+n(n-1)\int\sinh^{\bullet,n-2}xdx \](2)
\[ \int\sinh^{\bullet,n}xdx=\frac{1}{n+1}\sqrt{x^{2}+1}\sinh^{\bullet,n+1}x-\frac{1}{(n+1)(n+2)}x\sinh^{\bullet,n+2}x+\frac{1}{(n+1)(n+2)}\int\sinh^{\bullet,n+2}xdx \](3)
\[ \int\cosh^{\bullet,n}xdx==x\cosh^{\bullet,n}x-n\sqrt{x^{2}-1}\cosh^{\bullet,n-1}x+n(n-1)\int\cosh^{\bullet,n-2}xdx \](4)
\[ \int\cosh^{\bullet,n}xdx=\frac{1}{n+1}\sqrt{x^{2}-1}\cosh^{\bullet,n+1}x-\frac{1}{(n+1)(n+2)}x\cosh^{\bullet,n+2}x+\frac{1}{(n+1)(n+2)}\int\cosh^{\bullet,n+2}xdx \](1)
\begin{align*} \int\sinh^{\bullet,n}xdx & =x\sinh^{\bullet,n}x-n\int\frac{x}{\sqrt{x^{2}+1}}\sinh^{\bullet,n-1}xdx\\ & =x\sinh^{\bullet,n}x-n\sqrt{x^{2}+1}\sinh^{\bullet,n-1}x+n(n-1)\int\sinh^{\bullet,n-2}xdx \end{align*}(2)
\begin{align*} \int\sinh^{\bullet,n}xdx & =\int\sqrt{x^{2}+1}\sinh^{\bullet,n}x(\sinh^{\bullet}x)'dx\\ & =\frac{1}{n+1}\sqrt{x^{2}+1}\sinh^{\bullet,n+1}x-\frac{1}{n+1}\int x\sinh^{\bullet,n+1}x\frac{1}{\sqrt{x^{2}+1}}dx\\ & =\frac{1}{n+1}\sqrt{x^{2}+1}\sinh^{\bullet,n+1}x-\frac{1}{(n+1)(n+2)}x\sinh^{\bullet,n+2}x+\frac{1}{(n+1)(n+2)}\int\sinh^{\bullet,n+2}xdx \end{align*}(3)
\begin{align*} \int\cosh^{\bullet,n}xdx & =x\cosh^{\bullet,n}x-n\int\frac{x}{\sqrt{x^{2}-1}}\cosh^{\bullet,n-1}xdx\\ & =x\cosh^{\bullet,n}x-n\sqrt{x^{2}-1}\cosh^{\bullet,n-1}x+n(n-1)\int\cosh^{\bullet,n-2}xdx \end{align*}(4)
\begin{align*} \int\cosh^{\bullet,n}xdx & =\int\sqrt{x^{2}-1}\cosh^{\bullet,n}x(\cosh^{\bullet}x)'dx\\ & =\frac{1}{n+1}\sqrt{x^{2}-1}\cosh^{\bullet,n+1}x-\frac{1}{n+1}\int x\cosh^{\bullet,n+1}x\frac{1}{\sqrt{x^{2}-1}}dx\\ & =\frac{1}{n+1}\sqrt{x^{2}-1}\cosh^{\bullet,n+1}x-\frac{1}{(n+1)(n+2)}x\cosh^{\bullet,n+2}x+\frac{1}{(n+1)(n+2)}\int\cosh^{\bullet,n+2}xdx \end{align*}ページ情報
| タイトル | 逆三角関数と逆双曲線関数の冪乗積分漸化式 |
| URL | https://www.nomuramath.com/fy33guhx/ |
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三角関数と双曲線関数の微分
\[
\frac{d}{dx}\tan x=\cos^{-2}x
\]
1±itan(z)など
\[
1\pm i\tan z=\frac{1}{\cos\left(2\Re z\right)+\cosh\left(2\Im z\right)}\left(e^{\pm2i\Re z}+e^{\mp2\Im z}\right)
\]
三角関数の合成
\[
a\sin\theta+b\cos\theta =\sqrt{a^{2}+b^{2}}\sin(\theta+\alpha)
\]
三角関数の部分分数展開
\[
\pi\tan\pi x =-\sum_{k=-\infty}^{\infty}\frac{1}{x+\frac{1}{2}+k}
\]