A system defined by dy/dt + y = x is initially at rest, and x = u(t) – McqOptions

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1.	A system defined by dy/dt + y = x is initially at rest, and x = u(t) sin 2t then the forced response is K sin (2t - θ). The value of θ given by
A.	-tan¯¹(1)
B.	-tan¯¹(2)
C.	-tan¯¹(1/2)
D.	0
Answer» C. -tan¯¹(1/2)

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