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Results tagged with differential-algebra
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user 46140
7
votes
A Leibniz-like formula for $(f(x) \frac{d}{dx})^n f(x)$?
Suppose that we don't reorder the parts within terms and that we always post-multiply the $f$. So e.g. $$\begin{eqnarray*}f_1 &=& f \\
f_2 &=& (Df)f \\
f_3 &=& (D^2f)ff + (Df)(Df)f \\
f_4 &=& (D^3f)ff …
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