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if-a-b-C-a-lt-1-b-lt-1-a-b-1-a-b-lt-1-




Question Number 58965 by arcana last updated on 02/May/19
if a,b ∈C ∣ ∣a∣<1,∣b∣<1  ⇒∣((a−b)/(1−a^� b))∣<1^
ifa,bCa∣<1,b∣<1⇒∣ab1ab¯∣<1

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