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Convert the following filters with system functions. H(s)=(s+0.1)(s+0.1)2+9
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Solution:

S=2T(1211+21)=2(1z11+z1)[2(1z11+z1)+0.1]2+9=2(1z1)+0.1(1+z1)(1+z1)(2(1z1)+0.1(1+z1))2(1+z1)2+9

H[z]=[2(1z1)+0.1(1+z1)](1+z1)[2(1z1)+0.1(1+z1)]2+9(1+z1)2

By Impulse Invariant method:

H(s)=s+0.1(s+0.1)2+9

The inverse L.T. of the given function is

$ \begin{aligned}\\ h(t) &=e^{-0.1 t} \cos (3 t) & & \text { for } t \geqslant 0 \\\\ &=0 & …

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