Plot of the Heaviside step function Θ(x),  x↦{0:x&lt;01:x≥0{\displaystyle \Theta (x),\ {\begin{aligned}\ &amp;x\mapsto {\begin{cases}0:&amp;x&lt;0\\1:&amp;x\geq 0\end{cases}}\end{aligned}}} in the interval [-2.5,2.5]
Own work
Geek3