Help understanding line integral solution?

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SUMMARY

The discussion focuses on understanding the simplification of a line integral along a parameterized curve defined by c(t) = . The key formula mentioned is ds = ||c'(t)|| dt, which is essential for calculating the differential arc length in the context of line integrals. Participants emphasize the importance of correctly parameterizing the curve and applying the formula to achieve the desired simplification. The discussion highlights the necessity of having the complete definition of c(t) for accurate calculations.

PREREQUISITES
  • Understanding of line integrals in calculus
  • Familiarity with parameterized curves
  • Knowledge of differential arc length calculations
  • Basic proficiency in vector calculus
NEXT STEPS
  • Study the derivation of line integrals in vector calculus
  • Learn about parameterization techniques for curves
  • Explore the application of the formula ds = ||c'(t)|| dt in various contexts
  • Review examples of line integrals with different parameterizations
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Students and professionals in mathematics, physics, and engineering who are looking to deepen their understanding of line integrals and their applications in vector calculus.

Chandasouk
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http://img2.imageshack.us/img2/5061/14983795.jpg

I have no idea how they simplified the integral to the second step.
 
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That looks like a line integral along a parameterized curve c(t) = <x(t),y(t),z(t)>.

You didn't copy the part that gives the formula for c(t). And remember that

ds = ||c'(t)|| dt
 

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