Question 1176964: prove that Re(Z1Z2)=Re(Z1)Re(Z2)
Answer by ikleyn(52879)   (Show Source):
You can put this solution on YOUR website! .
This identity is INCORRECT.
It is WRONG, and THEREFORE, it can not be proved.
It only can be DISPROVED.
To disprove, take Z1 = i, Z2 = -i.
Then the left side of your formula is equal to 1, while the right side is equal to 0. Contradiction (!)
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From which garbage box did you recover this "problem" ?
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