目的研究正弦函数和余弦函数的一些计算公式。
Aim To study some calculation formula of sine function and cosine function.
所得到的系统对阶跃输入，斜坡输入，正弦函数输入有很好的响应特性。
The system has obtained very good step response, ramp response and sine function response.
比如当你调用数学的正弦函数的时候你就需要给它一个数值作为实际参数。
For example, when you call math. sin you pass a number as an argument.
算子作用于正弦波函数所得函数称为算子的象征。
Symbol of operator is the function of operator acting on sine function.
算子作用于正弦波函数所得函数称为算子的象征。
Symbol of operator is the function of operator acting on sine function.
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