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[" 1.If arg "((z-1)/(z+1))=(pi)/(2)" ,th...

[" 1.If arg "((z-1)/(z+1))=(pi)/(2)" ,then "],[[" (a) "|z|=1," (b) "|z|=2],[" (c) "|z|=1/2," (d) None of these "]]

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