python实现numerov算法

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numerov算法有些问题搞不懂
这个f(x)部分的不是提前计算出来的吗
我想实现的是数值计算y''-y=0
代码的问题在哪里

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参考这个：

GitHub - FelixDesrochers/Numerov: A python script that solves the one dimensional time-independent Schrodinger equation for bound states. The script uses a Numerov method to solve the differential equation and displays the desired energy levels and a figure with an approximate wave function for each of these energy levels. A python script that solves the one dimensional time-independent Schrodinger equation for bound states. The script uses a Numerov method to solve the differential equation and displays the desired energy levels and a figure with an approximate wave function for each of these energy levels. - GitHub - FelixDesrochers/Numerov: A python script that solves the one dimensional time-independent Schrodinger equation for bound states. The script uses a Numerov method to solve the differential equation and displays the desired energy levels and a figure with an approximate wave function for each of these energy levels. https://github.com/FelixDesrochers/Numerov

或者直接引入这个算法，然后看一下里面的内部实现

可以参考一下。
https://www.lmlphp.com/user/22903/article/item/523465/

可以参考一下这篇文章：https://www.coder.work/article/4946341