Q.
If α, β are distinct complex numbers with β=1, then value of β-α1-α¯ β equals
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a
1
b
α
c
2
d
none of these
answer is A.
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Detailed Solution
β=1⇒ββ¯=1∴ β−α1−α¯β=β−α1−α¯/β¯=β¯(β−α)β¯−α¯=|β||β−α||β¯−α¯|=|β|(1)=1. [∵ |z|=|z¯|]
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