If a = (z-i)/(z+i), show that, when z lies above the real axis, a will lie within the unit circle which has center at the origin. Find the locus of a as z travels on the real axis from 0 to +∞o. -

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.2: Graphs Of Equations
Problem 68E
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If a= (z-i)/(z + i), show that, when z lies above the real axis,
a will lie within the unit circle which has center at the origin.
Find the locus of a as z travels on the real axis from -∞0 to + ∞o.
Transcribed Image Text:If a= (z-i)/(z + i), show that, when z lies above the real axis, a will lie within the unit circle which has center at the origin. Find the locus of a as z travels on the real axis from -∞0 to + ∞o.
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