What would make the pll converge in frequency and phase

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A clever student notices that a high constant loop gain would make the PLL converge in frequency and phase. Rather than use an amplifier with infinite gain the student decides to just use an unstable filter.
If the loop filter of the PLL is H(s)=6s, the output sinusoid is y(t), and the input sinusoid is x(t)=sin(5t) what is y(1.8)?

Reference no: EM13246722

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