mm_maths/math/base/diff/test.js

这是一个可以将数学公式推导变形，并转成js和计算的模块。

const diff = require('./index');
console.log(diff(4, 4));
console.log(diff(100, 10));
console.log(diff(10, 25));
console.log(diff(2, 4));
console.log(diff(1, 2));