Definition of step function

Q.  Unit step function is
- Published on 15 Oct 15

a. Exists only for positive side
b. Is zero for negative side
c. Discontinuous at time t=0
d. All of the above

ANSWER: All of the above
 
Unit step function is a type of function that exists only for positive side and is zero for negative side. The unit step function is discontinuous at time t=0.
The unit step function u(t) is defined as
u(t) = 0 for t<0
= 1 for t>0

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