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[" 5.Prove that: "],[[" (i) "((1+i)/(1-i...

[" 5.Prove that: "],[[" (i) "((1+i)/(1-i))^(200)=1," (ii) "((1-i)/(1+i))^(36)=1],[" (iii) "(1+i)/(sqrt(2))=sqrt(i),(" UP "2010,15)],[" (iv) "(1+i)^(4)(1+(1)/(-))^(4)=16]]

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