Proving Stokes Theorem for Vector Field E on Given Contour and Surface

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SUMMARY

The discussion centers on proving Stokes' Theorem for the vector field E defined as E = x(xy) - y(x² + 2y²). The user calculated the curl of E, denoted as (nabla)xE, over the surface defined by the boundaries x=0, x=1, y=0, and y=1, arriving at a value of -3/2. However, the expected answer to validate Stokes' Theorem is -1, leading to the conclusion that the textbook answers may be incorrect.

PREREQUISITES
  • Understanding of vector calculus, specifically Stokes' Theorem.
  • Familiarity with calculating the curl of a vector field.
  • Knowledge of surface integrals and line integrals in vector fields.
  • Ability to manipulate and evaluate determinants of matrices.
NEXT STEPS
  • Review the derivation of Stokes' Theorem in vector calculus.
  • Practice calculating the curl of various vector fields using different methods.
  • Explore the implications of discrepancies between textbook answers and calculated results.
  • Investigate the properties of vector fields and their behavior along specified contours and surfaces.
USEFUL FOR

Students studying vector calculus, particularly those focusing on Stokes' Theorem, as well as educators and tutors seeking to clarify common misconceptions in vector field analysis.

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Homework Statement



for the vector field E=x(xy)-y(x^2 +2y^2)
find E.dl along the contour
find (nabla)xE along the surface x=0 and x=1 y=0 and y=1

Homework Equations





The Attempt at a Solution


i tried the second question (nabla)xE over the surface by finding the determinant of the matrix as -2x-x=-3x so (nabla)xE=-3x and integrating along the surface x and y i found the answer to be -3/2 but the answer is meant to be -1 for both cases in order to prove stokes thm
 
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For that vector field and contour, -3/2 is the correct answer.
 
ok thanks i guess the textbook answers are wrong
 

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