摘要：
Lecture 6Regression test回归测试，测试所有的情况。Speed of convergence收敛速度Newton's method 牛顿法The basic idea is, you take a guess and you find the tangent of that guess简单的说，先设定一个初始猜测值guess，然后求得该值对应函数的切点斜率。f(guess) = guess² - xSo let's say I guessed 3, I look for the tangent of the curve at 3.And then 阅读全文
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