x^(dx) - 1
\begin{align}
\int x^{dx} - 1 &= \int \frac{x^{dx} - 1}{dx} \, dx \\
&= \int \log x \, dx \\
&= x \log x - x + C
\end{align}
( は積分定数)
\begin{align}
\int x^{dx} - 1 &= \int \frac{x^{dx} - 1}{dx} \, dx \\
&= \int \log x \, dx \\
&= x \log x - x + C
\end{align}
( は積分定数)