Evaluating Vector Calculus Line Integral

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SUMMARY

The discussion focuses on evaluating the line integral of the function (x^2 - y^2)dx - 4xydy using Green's Theorem over the region bounded by y^2 = 4x, y = 0, and x = 1 in the first quadrant. The user attempts to compute the double integral and arrives at an answer of 24/5(2^5/2), which contradicts the book's answer of -2. A key point raised is the importance of correctly determining the partial derivatives dv/dx and du/dy, with a specific note on the sign errors that may lead to incorrect results.

PREREQUISITES
  • Understanding of Green's Theorem in vector calculus
  • Familiarity with line integrals and double integrals
  • Knowledge of partial derivatives and their applications
  • Basic skills in algebraic manipulation and integration techniques
NEXT STEPS
  • Study Green's Theorem applications in vector calculus
  • Practice evaluating line integrals with various functions
  • Review the computation of double integrals in bounded regions
  • Examine common mistakes in determining partial derivatives
USEFUL FOR

Students and professionals in mathematics, particularly those studying vector calculus, as well as educators looking for examples of common pitfalls in evaluating line integrals.

avinash patha
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use green lemma to evaluate line integral int of (x^2-y^2)dx-4xydy over rgn bounded by y^2=4x,y=0,x=1 in ist quadrant.
attempt

double integral (dv/dx -du/dy)dx dy=int. from limit 0to 2(int.from 0to 2x^1/2(6ydxdy))
=int.lim 0to 2(12x^3/2)dy

=24/5(2^5/2)


ans in book is -2.
 
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I don't find that dv/dx-du/dy is 6y. Be careful with your signs.
 

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