Complex plane locus question (another one)

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SUMMARY

The discussion centers on the complex plane locus defined by the equation z = a + bt + ct², where t is a real parameter and a, b, c are complex numbers with the condition that b/c is real. This implies that both b and c are pure imaginary numbers. The conclusion drawn is that the locus of z in the complex plane is a vertical line at x = Re(a), confirming that the real part of a determines the line's position. The inquiry about specific values for b and c, such as b = 1 + i and c = 2 + 2i, raises questions about the implications of these choices on the locus.

PREREQUISITES
  • Understanding of complex numbers and their representations
  • Familiarity with the concept of loci in the complex plane
  • Knowledge of real and imaginary parts of complex expressions
  • Basic algebraic manipulation of equations involving parameters
NEXT STEPS
  • Study the properties of complex numbers, focusing on pure imaginary components
  • Explore the geometric interpretation of loci in the complex plane
  • Learn about parameterized equations and their graphical representations
  • Investigate the implications of varying coefficients in complex equations
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Students studying complex analysis, mathematicians interested in geometric interpretations, and educators looking for examples of complex loci in teaching materials.

applestrudle
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Homework Statement



again there is no answer provided in the book!

a +bt +ct^2 = z where t is a real parameter, and a, b, c are complex numbers with b/c real


Homework Equations



The Attempt at a Solution



b/c real indicates that b and c are pure imaginary so when you split the equation into real and imaginary parts:

x = Re(a)

y = Im(a) + Im(b)t + Im(c)t^2

since t is a parameter, in the complex plane, the locus of z is a straight vertical line with x = Re(a)?
 
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applestrudle said:
b/c real indicates that b and c are pure imaginary

Are you sure? What if b = 1 + i and c = 2 + 2i ?
 

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