Calculating Curve Length: A Shortcut for Solving Complex Equations?

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SUMMARY

The discussion focuses on calculating the length of the curve defined by the equation \(y = \frac{x^5}{6} - \frac{\ln x}{4}\) over the interval \(2 \leq x \leq 4\). The integral required for this calculation is \(\int_{2}^{4}\sqrt{1 + \left(\frac{5x^{4}}{6} - \frac{1}{4x}\right)^{2}}\,dx\). Participants suggest employing numeric integration techniques or using a calculator for a quicker solution. The emphasis is on sharing progress to facilitate effective assistance.

PREREQUISITES
  • Understanding of calculus, specifically integral calculus.
  • Familiarity with curve length formulas and their derivations.
  • Knowledge of numeric integration techniques, such as Simpson's rule or the trapezoidal rule.
  • Proficiency in using graphing calculators or software for numerical computations.
NEXT STEPS
  • Research numeric integration techniques, focusing on Simpson's rule and the trapezoidal rule.
  • Explore the use of graphing calculators for evaluating definite integrals.
  • Study the derivation of the curve length formula in calculus.
  • Practice solving similar problems involving curve length calculations.
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Students and educators in mathematics, particularly those studying calculus, as well as anyone interested in applying numeric integration techniques to solve complex equations.

mathforsure
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Hi everyone, I have an exercise I haven't solved yet, please help me.
Find the length of the curve: $$y = \frac{{x}^{5}}{6} - \frac{lnx}{4}, 2 \le x \le 4$$.
 
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Hello and welcome to MHB, mathforsure! :D

We ask that our users show their progress (work thus far or thoughts on how to begin) when posting questions. This way our helpers can see where you are stuck or may be going astray and will be able to post the best help possible without potentially making a suggestion which you have already tried, which would waste your time and that of the helper.

Can you post what you have done so far?
 
My progress, the last step is find the integral:
$$\int_{2}^{4}\sqrt{1 + (\frac{5x^{4}}{6} - \frac{1}{4x})^{2}}\,dx$$
 
I could be wrong, but it appears to me that you will need to use some sort of numeric integration technique. (Worried)
 
I think the fastest solution is using calculator (Wink)
 

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