Complex analysis and complex plane

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SUMMARY

The discussion focuses on the complex function defined by f(z) = u + vi, where u = sin(x) * cosh(y) and v = cos(x) * sinh(y). Participants are tasked with determining the trajectory of the point (u, v) based on the trajectory of the complex number z = x + yi. The suggestion is made to select specific points on the trajectory of z and substitute these values into the function to analyze the resulting path in the (u, v) plane.

PREREQUISITES
  • Understanding of complex numbers and their representation in the complex plane.
  • Familiarity with hyperbolic functions such as sinh and cosh.
  • Basic knowledge of trigonometric functions, specifically sine and cosine.
  • Ability to perform substitutions in mathematical functions.
NEXT STEPS
  • Explore the properties of complex functions and their mappings in the complex plane.
  • Study the behavior of hyperbolic functions in relation to trigonometric functions.
  • Learn how to visualize complex functions using software tools like MATLAB or Python's Matplotlib.
  • Investigate the concept of trajectories in the context of complex analysis.
USEFUL FOR

Students studying complex analysis, mathematicians interested in complex functions, and educators teaching advanced mathematics concepts.

tsopatsopa
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Homework Statement


Let z= x + yi be a complex number.
and f(z) = u + vi a complex function.
As:
u = sinx[itex]\ast[/itex]coshy
v= cosx[itex]\ast[/itex]sinhy

And if z has a trajectory shown in the attached image.
What would be the trajectory of the point (u,v) ?
 

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Welcome to PF, tsopatsopa! :smile:

Pick a couple of points on the trajectory and plug the numbers into your function?
 

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