Help with integration problem.

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SUMMARY

The discussion centers on calculating the volume of the solid formed by revolving the area between the curves y=4√x and y=x around the line x=17. The user attempted to set up the integral but arrived at an incorrect answer of -768π. Key issues identified include missing terms in the integration process and a need for clearer boundary definitions. The importance of using LaTeX for clarity in mathematical expressions was also emphasized.

PREREQUISITES
  • Understanding of integral calculus, specifically volume calculations using the disk and shell methods.
  • Familiarity with the curves y=4√x and y=x.
  • Proficiency in setting up and evaluating definite integrals.
  • Knowledge of LaTeX for formatting mathematical expressions.
NEXT STEPS
  • Review the method of disks and shells for volume calculations.
  • Learn how to properly set up definite integrals for revolving solids.
  • Practice using LaTeX for clearer presentation of mathematical work.
  • Revisit integration techniques to ensure all terms are accounted for in polynomial expansions.
USEFUL FOR

Students in calculus courses, mathematics educators, and anyone involved in solving volume problems related to solid geometry.

hard_assteel
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Homework Statement



find volume of y=4(x)^(.5) y=x, it revolves about x=17
here is my work
pi integral 0-16 (17-4(x)^(.5))^(2)-(17-x)^(2)
simplified and integrated too;
pi integral 0-16 {(50/2)x^2-(1/3)x^3-(272/3)(x)^(3/2)}
my definite integrated answer was
-768pi, but it is wrong

any help would be appreciated
thank you

Homework Equations


piR^2


The Attempt at a Solution

 
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I didn't check your work very thoroughly, but I can tell that you're missing a term in your second equation so you might want to recheck your expansion and integration steps. You should have a number times x in there if you wrote your first equation correctly. Also, you might want to look at the posts on how to use LaTeX. It makes your work a lot easier to read.
 
Are you trying to do it with the method of shells or discs? I couldn't follow your steps towards the solution. Try declaring your boundries/equations before starting on a solution.
 

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