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

a shifted unit step function orginating at t = a

The signal define by the equations u(t - a) = 0 for t < a and u(t - a)

1.	The signal define by the equations u(t - a) = 0 for t < a and u(t - a) = 1 for t ≥ a is
A.	a unit step function
B.	a shifted unit step function orginating at t = a
C.	a pulse function
D.	none of the above
Answer» C. a pulse function