lerp功能 该Swift Playground包含与线性插值有关的功能，并演示了这些功能。 lerp 此功能演示了线性插值，使您可以沿两个已知点之间的路径查找未知点。 此函数使用三个参数： pointOne和pointTwo是Double值，而percentage是0.0到1.0之间的Double值。 此函数返回一个Double值，该值是沿pointOne和pointTwo之间的路径行进percentage 。 lerpRange 这个函数有三个参数： pointOne和pointTwo都是Double值，而percentages是阵列Double值表示百分数（之间0.0和1.0 ）。 此函数返回一个Double值数组，该数组是按percentages数组中每个percentage值在两个提供的点之间进行插值的结果。 注意：如果在用例调用lerpRange传递给等间距的百分比数组，

Advanced Modern Algebra, Part 1, Joseph Rotman.pdf

这套完整的讲义是我们学校一个特别厉害的老师手写的，他平时就用这个上课，我当时就是通过这个讲义学懂了线性代数的内容。看手写讲义会有一种奇妙的感觉吧。

A Survey of Modern Algebra, Garrett Birkhoff A Survey of Modern Algebra, Garrett Birkhoff

经典教材 1964年出版 找了好久才获得的

线性代数应该这样学，英文版，第三版 Linear algebra done right, 3rd Edition, 2015

矩阵代数，Springer的好书，不容易得到的，

Courses taught by Artin, who is a distinguished professor at MIT

北大linear Algebra教材。题比较老和陈旧。但是很有难度。有意者可以试试！

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