Compute static error coefficients for a unity feedback system with (mathrm{G}(s)=frac{12}{s(s+6)}). If input (r(t)=4+3 t), find steady

Question:

Compute static error coefficients for a unity feedback system with $\mathrm{G}(s)=\frac{12}{s(s+6)}$. If input $r(t)=4+3 t$, find steady state error. For this system if steady state error is to be reduced to $10 \%$ of existing value, what should be percentage change in gain?

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