Physics · Signals and Systems
Consider a continuous-time linear time-invariant (LTI) system described by the differential equation: d2y(t)/dt2 + 3 dy(t)/dt + 2 y(t) = x(t) where y(t) is the output and x(t) is the input. If the system is initially at rest, what is the zero-state response for the input x(t) = e-t u(t)?
- 1y(t) = (-e-t + t e-t + e-2t) u(t)✓
- 2y(t) = (-et + t et + e2t) u(t)
- 3y(t) = (-et + t e-t + e-2t) u(t)
- 4y(t) = (-e-t + e-2t) u(t)
Correct answer
y(t) = (-e-t + t e-t + e-2t) u(t)
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