---
# System prepended metadata

title: Generalization of Feynman Formula
tags: [Math]

---

###### tags: `Math`

# Generalization of Feynman Formula

\begin{eqnarray}
	\left. \frac{d}{d\lambda} e^{A(\lambda)} \right|_ {\lambda=0} = \int_{0}^{1} e^{1-s} A'(\lambda) e^sds
\end{eqnarray}