# 問題 5-8 の解答例

Problem 5-8 Note that Eq. (5-44) implies $G_{A}^{*}(x,x^{'})=G_{A}(x^{'},x)$. With this in mind show that for any two wave functions $g(x)$ and $f(x)$, both of which approach $0$ as $x$ goes to $\pm\infty$, \int_{-\infty}^…