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Benedict Irwin edited Explaination.tex
over 9 years ago
Commit id: 4a93487a676989f5f624a435dd89a2730ac1491f
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...
\end{equation}
Where $c$ is the integral from $a$ to $b$ of $u$. That way if the $xu$ term vanishes, the identity holds...
Thus the operation $d/d\mathbb{I}$ was mapping the integral \begin{equation}
\frac{d/d\mathhbb{I}}\int_a^b f(x) dx \to \int_a^b xf'(x) dx
\end{equation}
and the answer \begin{equation}
\frac{d/d\mathhbb{I}}I \to -I + [xf(x)]_a^b
\end{equation}