学习笔记(01):程序员的数学：微积分-微积分基本概念

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rate= delta y / delta x

曲线某点的rate,相切直线的斜率为rate

割圆术

n*b->2pi*r

secant line 割线

Tangent line 切线

lim(deltax ->0)delta f(x)/delta x

f(x)=x^n 

f(x)' = nx^n-1