How Do You Simplify This Complex Absolute Value Expression?

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SUMMARY

The discussion focuses on simplifying the complex absolute value expression \(\left[\left|(\alpha + k)^{2}e^{-2i \alpha a} - (\alpha - k)^{2}e^{2i \alpha a}\right|\right]^{2}\). The key insight is recognizing that the magnitude of the exponential term \(\left|e^{ix}\right| = 1\) simplifies the expression significantly. The final simplified form is \((\alpha + k)^{4} + (\alpha - k)^{4} - (\alpha^{2} - k^{2})^{2}(e^{4i \alpha a} + e^{-4i \alpha a})\).

PREREQUISITES
  • Understanding of complex numbers and exponential functions
  • Familiarity with absolute value properties in complex analysis
  • Knowledge of algebraic expansion and simplification techniques
  • Basic grasp of Euler's formula and its applications
NEXT STEPS
  • Study the properties of absolute values in complex functions
  • Learn about Euler's formula and its implications in simplification
  • Explore algebraic identities related to powers and expansions
  • Practice simplifying complex expressions using similar techniques
USEFUL FOR

This discussion is beneficial for students studying complex analysis, mathematicians working on algebraic simplifications, and anyone interested in mastering the manipulation of complex expressions.

FlufferNuterFSU
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Homework Statement



I need to simplify the expression below. The absolute value is throwing me off

<br /> \left[\left|(\alpha + k)^{2}e^{-2i \alpha a} - (\alpha - k)^{2}e^{2i \alpha a}\right|\right]^{2}<br />

Homework Equations



I know \left|e^{ix}\right| = 1

The Attempt at a Solution



I know this eventually simplifies to:
<br /> (\alpha + k)^{4} + (\alpha - k)^{4} - (\alpha^{2} - k^{2})^{2}(e^{4i \alpha a} + e^{-4i \alpha a})<br />
 
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Don't worry about it. I figured it out.
 

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