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\text { An electrical system is represented by } \frac{d^{2} y}{d t^{2}}+6 \frac{d y}{d t}+13 y=u(t) \text { where, initial conditions } \text { are } y(0)=\frac{d y(0)}{d t}=0 \text

{ and } u(t) \text { , input of the system is a unit step input. } After linearizing the system, find y(t)?

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