tanh(0.356 +j0.875)
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A: The complex number is calculated as shown below.
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A: Please see the attachment
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A: ∑n=1∞-1n+1n4nan=-1n+1n4na1=14a2=-242=-18a3=343=364a4=-444=-164a5=545=51024a6=-646=-32048
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