Exponential and trigonometric Functions: read Chapter 2 and do exercises.
Exponential and trigonometric Functions: read Chapter 2 and do exercises.
指数和三角函数：阅读第二章以及做练习题。
Exponential and trigonometric Functions: read Chapter 2 and do exercises.
指数和三角函数：阅读第二章以及做练习题。