巾関数の積分表現
巾関数の積分表現
\[ \frac{1}{z^{\alpha}}=\frac{1}{\Gamma\left(\alpha\right)}\int_{0}^{\infty}t^{\alpha-1}e^{-zt}dt \]
\[ \frac{1}{z^{\alpha}}=\frac{1}{\Gamma\left(\alpha\right)}\int_{0}^{\infty}t^{\alpha-1}e^{-zt}dt \]
-
\(\Gamma\left(z\right)\)はガンマ関数\begin{align*}
\frac{1}{z^{\alpha}} & =\frac{1}{\Gamma\left(\alpha\right)}\frac{\Gamma\left(\alpha\right)}{z^{\alpha}}\\
& =\frac{1}{\Gamma\left(\alpha\right)}\mathcal{L}_{t}\left[H\left(t\right)t^{\alpha-1}\right]\left(z\right)\\
& =\frac{1}{\Gamma\left(\alpha\right)}\int_{-\infty}^{\infty}H\left(t\right)t^{\alpha-1}e^{-zt}dt\\
& =\frac{1}{\Gamma\left(\alpha\right)}\int_{0}^{\infty}t^{\alpha-1}e^{-zt}dt
\end{align*}
ページ情報
| タイトル | 巾関数の積分表現 |
| URL | https://www.nomuramath.com/wpw1zrxj/ |
| SNSボタン |
等差数列・等比数列・無限等比級数の和
\[
\sum_{k=1}^{n}\left(a_{1}r^{k-1}\right)=a_{1}\frac{1-r^{n}}{1-r}
\]
軌跡・領域での順像法と逆像法
区分的に連続と区分的に滑らかの定義
畳み込みの性質
\[
\mathcal{F}\left(\left(f*g\right)\left(x\right)\right)=\mathcal{F}\left(\left(f\right)\left(x\right)\right)\mathcal{F}\left(\left(g\right)\left(x\right)\right)
\]