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For complex numbers z and q, prove that |z|2w – |w|2z = z – w if and only if z = w or z w-= 1.

Tushar Singh , 14 Years ago
Grade 11
anser 1 Answers
mycroft holmes

Last Activity: 14 Years ago

Rewrite the equation as 

 

If   then the equation trivially holds. If , then taking modulus on both sides, we obtain 

 

.

 

Now we can rewrite the equation as 

 

which yields 

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