The range for unit step function for u(t ‚Äö√Ñ√∂‚àö√ë‚àö¬® a), is ________$#

t ‚Äö√Ñ√∂‚àö¬¢¬¨√ü a

t ‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢ a

The range for unit step function for u(t ‚Äö√Ñ√∂‚àö√�

1.	The range for unit step function for u(t ‚Äö√Ñ√∂‚àö√ë‚àö¬® a), is ________$#
A.	t < a
B.	t ‚Äö√Ñ√∂‚àö¬¢¬¨√ü a
C.	t = a
D.	t ‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢ a
Answer» E.