ymathland 燕燕讲数学

10 mins finishing paper 2020 AMC(Australian Mathematics Competition) years 3-4

椭圆与圆综合3:设点与设Ｋ法

椭圆与圆综合2:设点法还是设Ｋ法

椭圆与圆综合1:用定义和几何意义解题

Surds...What,How?

分数指数幂

[Integration 4]Integration by parts

[Integration 3]Further integration by substitution

中澳高考对比：函数图像与简单性质

集合：典型例题快速掌握集合知识及考点

[Integration 2] Integrating by substitution 1

高考前必看的阿波罗尼斯圆问题

[Derivative 4] More calculation....implicit differentiation, trigonometric,inverse trigonometric

9大类函数值域问题:11年教学经验总结的干货,必看

[Integration 1] Integration...What? How?

[Derivative 3] Derivative.....chain rule, tangent,the local maximum and minimum points

[导数5]导数应用:含参数的函数不等式恒成立问题

[导数4] 含参数导数问题的分类讨论

[导数3] 用导数方法求函数的值域

[Derivative 2]Derivative.... how? Chain rule

[导数2] 几个例子让你快速掌握导数的运算法则

[Derivative 1] Derivative....What?Fist principles

[导数1]快速让你明白什么是导数及导数的几何意义

[sequence 4] The sum of a geometric sequence

[数列4]等比数列前n项和,错位相减法求和

[sequence3] Geometric sequence...What?

[数列系列3]等比数列的概念及通项公式

[Sequence2]Sequence an&Sn....What?Arithmetic Sequence Sn...What?

[数列系列2]数列an与Sn关系? 等差数列Sn...?

[sequence 1]Arithmetic sequence...what?