Heaviside Step Function

$$H(x)=\{\begin{array}{ll}1,& x\ge 0\\ 0,& x<0\end{array}$$

Denoted by $H,\theta ,u,\text{1},1$ And $H_c=H(t-c)$ The Dirac Delta Function is the Weak Derivative of the Heaviside Step Function. This function becomes differentiable under the Laplace Transform