How Do I Calculate Arc Length for f(x)=x^3?

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Discussion Overview

The discussion revolves around calculating the arc length of the function f(x) = x^3. Participants explore the integration process required to find this arc length, with a focus on practical applications in metalworking rather than purely mathematical concerns.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • Stephen expresses difficulty in finding the arc length for f(x) = x^3 and seeks guidance on integrating the expression (1+(3x^2)^2)^(1/2).
  • One participant suggests that the integral involves an elliptic integral of the first kind and provides a link to a resource for further assistance.
  • Stephen acknowledges the provided link but indicates a preference to avoid complex integrations for his metalworking project, suggesting he may opt for simpler functions instead.
  • Another participant shares an additional online resource for math calculations that may assist in integration tasks.

Areas of Agreement / Disagreement

There is no consensus on the best approach to calculating the arc length, as Stephen leans towards avoiding complex integrations while others provide resources that could facilitate the process.

Contextual Notes

The discussion highlights the challenge of integrating a specific function and the potential for reliance on online tools, but does not resolve the complexities involved in the integration itself.

Who May Find This Useful

Metalworkers, hobbyists, or anyone interested in practical applications of calculus in design and layout projects may find this discussion relevant.

basha
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Hello everyone. I'm a metal worker trying to do the layout for a project using a few nice curves. To do that, I need to get arc length, but I'm having trouble finding it for f(x)=x^3. If anyone can give me a nudge in the right direction for integrating (1+(3x^2)^2)^1/2, it would be greatly appreciated. If not, I'll just have to cook up some easily integratable functions so I can get welding, but I'd prefer to work the other way around.

Thanks in advance,
Stephen.
 
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That integral involves an elliptic integral of the first kind, go to www.integrals.com and input (1+(3x^2)^2)^(1/2)
 
Thanks for the link, it's really handy. Since this is a metal project, and not a math one, I think I'll just avoid using that particular fuction, since I can get the lines I want without getting into such beastly integrations. Again, that link is great, and I'll be putting it in my toolbox. Thanks.
 
Use also http://www.hostsrv.com/webmab/app1/MSP/quickmath/02/pageGenerate?site=quickmath&s1=calculus&s2=integrate&s3=advanced has many free online math calculators: click on the links listed on the lefthand side of their home page.)
 
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