Line Integral Homework: Integrate (xe^y)ds

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SUMMARY

The forum discussion centers on the line integral of the function (xe^y) along the curve defined by x=e^y. The integral is computed as (1/3)e^3y + C, with the solution involving the integral of (xe^y)((e^y)^2 + 1)^(1/2). The user seeks clarification on the handling of the 1/2 exponent during the integration process, indicating a common point of confusion in evaluating integrals involving exponential functions.

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Homework Statement


Integrate some area C of (xe^y)ds where C is the arc of the curve x=e^y


Homework Equations


What is the indeffinite integral and why is it that? Answer is (1/3)e^3y + C


The Attempt at a Solution



Integral of (xe^y)((e^y)^2 + 1)^(1/2)

= Integral of (e^2y)(e^2y + 1)

= (e^3y)/3 + (e^2y)/2 + C
 
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winter_ken said:

Homework Statement


Integrate some area C of (xe^y)ds where C is the arc of the curve x=e^y


Homework Equations


What is the indeffinite integral and why is it that? Answer is (1/3)e^3y + C


The Attempt at a Solution



Integral of (xe^y)((e^y)^2 + 1)^(1/2)

= Integral of (e^2y)(e^2y + 1)

What happened to the 1/2 exponent?
 

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