本人以前做的正弦波显示，可以动态更改振幅和频率。可做教学演示！-I used to do the sine wave display, you can dynamically change the amplitude and frequency. Teaching demonstration to do!

数学函数应用，这是一个正弦波的例子，蛮经典的，希望大家能从这找到好东西-Application of mathematical functions, which is a sine wave example, very classic, I hope you find the good stuff from this