The signal define by the equations( -) = 0 for < and ( - ) = 1 for ≥ is

The signal define by the equations( -) = 0 for < and ( - ) = 1 for �

1.	The signal define by the equations( -) = 0 for < and ( - ) = 1 for ≥ is
Answer» u(t) is a unit step function u(t - a) is a unit step function shifted in time by a.