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Identify whether the following system is minimum phase, maximum phase, mixed phase.(i)H1(z)=6+z1+z2(ii)H2(z)=1z16z2
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a)H1(z)=6+z1z2

H1(z)=6z2+z1z2=6(z+1/2)(z1/3)z2zeros  z1=12,z2=13

As both zeros are inside unit circle, this system is minimum phase system.

$b) 1 -z^ {-1} -6z^{-2} \\ H_2(z)=1-z^{-1}-6z^{-2}\\ =\dfrac {z^2-z-6}{z^2}=\dfrac {(z+2)(z-2)}{z^2}\\ \text {zeros are at } z_1=-2, …

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