Determining Transfer Function from Pole-Zero Chart

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ur5pointos2sl
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Hello-

I need to determine the transfer function given the pole-zero chart below. I came up with the following for the transfer function:

H(s) = 1/[(s-(-2+j2)*(s-(-2-j2))] = 1/(s^2+4s+8)

Could someone verify if this is inded the correct transfer function?

Thanks
 

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