Heaviside unit function

例句：

1. 1.The Heaviside unit function is used to model the behavior of a system in response to an external input.
   海维西德单位函数用于模拟系统对外部输入的反应行为。
2. 2. In this example, we will use the Heaviside unit function to solve the problem of finding the maximum point in a convex quadratic function.
   在这个例子中，我们将使用海维西德单位函数来求解凸二次函数的最大点问题。
3. 3. The Heaviside unit function is also known as the step function, which has a discontinuous jump at each input value.
   海维西德单位函数也被称为阶跃函数，它在每个输入值处都有不连续的跳跃。