Which_of_the_following_systems_is_memory_less?$

1.	Which_of_the_following_systems_is_memory_less?$
A.	y(t) = 2x(t) + <sup>d</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>dx</sub> x(t)
B.	y(t) = 2x<sup>2</sup> (t) + <sup>d</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>dx</sub> x(t)
C.	y(t) = ‚Äö√Ñ√∂‚àö‚Ä†¬¨¬•x(t)dt
D.	y(t) = 2x<sup>2</sup> (t)
Answer» E.

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