Solving Complex Line Integrals: Line Segment from 2 to 3+i Using Green's Theorem

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SUMMARY

The discussion focuses on solving the line integral \(\int_{\gamma} |z|^2 dz\) along the line segment from 2 to \(3+i\) using Green's Theorem. Participants emphasize the importance of parameterizing the line segment correctly, with \(x(t) = t\) and \(y(t) = t - 2\). The correct differential \(dz\) is derived from the parameterization, leading to the integration process. Key errors identified include incorrect substitution and integration techniques that hindered initial attempts.

PREREQUISITES
  • Understanding of complex variables and line integrals
  • Familiarity with Green's Theorem
  • Ability to parameterize curves in the complex plane
  • Knowledge of integration techniques in calculus
NEXT STEPS
  • Study the application of Green's Theorem in complex analysis
  • Learn how to parameterize curves in the complex plane
  • Practice solving line integrals with different parameterizations
  • Explore advanced integration techniques for complex functions
USEFUL FOR

Students and educators in mathematics, particularly those studying complex analysis and line integrals, as well as anyone seeking to deepen their understanding of Green's Theorem.

loki91
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Homework Statement



Compute the following line integral:

[tex]\int_{\gamma} |z|^2 dz[/tex] where [tex]\gamma(t)[/tex] is the line segment from 2 to 3 + i

Homework Equations



Green's Theorem

The Attempt at a Solution



I originally started by saying that y = x - 2 and subing that into the equation "x^2 + y^2". Then tried to integrat it but failed.

Where am I going wrong?
 
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So
z = x+i.y

Parameterise the line by
x(t)=t
y(t)=t-2

Now write the parameterised of the line z(t), then find the differential dz in terms of dt, then perform the integration over t
 

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