Polar complex question, similtaneous equations

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SUMMARY

The discussion focuses on solving simultaneous equations in polar coordinates, specifically using the Cauchy-Riemann equations. The user is tasked with demonstrating the relationships Ux=Ur*cos(theta)-1/r*Utheta*sin(theta) and Vx=Vr*cos(theta)-1/r*Vtheta*sin(theta). Key equations provided include transformations for U and V in terms of r and theta, highlighting the need for a clear understanding of polar coordinate systems and their derivatives. The user expresses difficulty in manipulating the equations to derive the desired results.

PREREQUISITES
  • Understanding of polar coordinates and their transformations
  • Familiarity with Cauchy-Riemann equations
  • Knowledge of simultaneous equations and algebraic manipulation
  • Basic calculus concepts related to derivatives in polar coordinates
NEXT STEPS
  • Study the derivation of the Cauchy-Riemann equations in polar coordinates
  • Practice solving simultaneous equations with trigonometric identities
  • Explore polar coordinate transformations in multivariable calculus
  • Review examples of applying derivatives in polar systems
USEFUL FOR

Students studying advanced calculus, particularly those focusing on complex analysis and polar coordinate systems. This discussion is beneficial for anyone looking to deepen their understanding of the Cauchy-Riemann equations and their applications in polar coordinates.

fredrick08
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Homework Statement


x=r*cos(theta) y=r*sin(theta)
Ur=Ux*cos(theta)+Uy*sin(theta)
Utheta=-Ux*r*sin(theta)+Uy*r*cos(theta)
Vr=Vx*cos(theta)+Vy*sin(theta)
Vtheta=Vy*r*sin(theta)+Vx*r*cos(theta)

cauchy rieman equations, Ux=Vy Uy=-Vx and for polar Ur=(Vtheta)1/r Vr=(Utheta)(-1/r)

show that Ux=Ur*cos(theta)-1/r*Utheta*sin(theta) and Vx=Vr*cos(theta)-1/r*Vtheta*sin(theta)

The Attempt at a Solution


I got told i need to use simultaneous equations.. I've tried soo amny times but all i get is Ux=Ux 0=0 or 1=1... please can someone put me on the right track
 
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ok i can work backwards form the answer, and see that is is correct... but i don't know how to show Ux and Vx from what i have got.
 
anyone?
 

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