Mathematics · Complex Analysis
Fix a positive real number c. Consider the locus of all points z ∈ &complex; such that |(z - i)/(z + i)| = c. Which of the following statements is true?
- 1If c = 1, the locus is a straight line not passing through the origin
- 2If c = 1, the locus is a straight line parallel to the imaginary axis
- 3If c < 1, the locus is a circle centered on the real axis
- 4If c > 1, the locus is a circle centered on the imaginary axis✓
Correct answer
If c > 1, the locus is a circle centered on the imaginary axis
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