Amanda1m的博客

Greet British people greet each other by talking about the weather, while in China we will say "你吃了吗". The most common form of greeting in many countries when you are introduced to a new friend is a ...

1.三角函数正交性 2.周期为2pi的函数进行三角函数展开 3.周期为2L的函数进行三角函数展开 4.使用欧拉公式，复指数形式将周期为T的函数展开 5.傅里叶变换与反傅里叶变换 ...