If z(1) and z(2) are two complex number...

If `z_(1) ` and `z_(2)` are two complex numbers such that `|z_(1)| lt 1 lt |z_(2)|`, then prove that `|(1- z_(1)barz_(2))//(z_(1)-z_(3))| lt 1`

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The correct Answer is:

` rArr |(1 - z_(1) barz_(2))/(z_(1) - z_(2))| lt 1 `

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