GATE EC 2014 Set 2 — Question 56
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Control Systems → State-Space Analysis → Solution of State Equations
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Question
An unforced linear time invariant (LTI) system is represented byIf the initial conditions are and , the solution of the state equation is
Correct answer
(C) x₁(t) = e^(-t), x₂(t) = -e^(-2t)
Solution
The system matrix is diagonal, so the two states are decoupled:Hence
- (A) constants: not solutions of the unforced equations.
- (B), (D) use for and the wrong initial values.
- (C) , : correct.
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