Triple Integrals: Evaluating ∫∫∫6xydV

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SUMMARY

The discussion focuses on evaluating the triple integral ∫∫∫6xydV over a specified region defined by the surfaces z = 1+x+y and the curves y = √x, y = 0, and x = 1. The correct setup for the integral is confirmed as ∫∫∫6xydzdydx, with z ranging from 0 to 1+x+y, x from 0 to 1, and y from √x to 0. The participant's confusion regarding the limits for y is addressed, clarifying that y should not extend to -1-x, but rather remain within the bounds defined by the curves.

PREREQUISITES
  • Understanding of triple integrals in calculus
  • Familiarity with the concept of region of integration
  • Knowledge of the curves y = √x and their implications in the xy-plane
  • Ability to interpret and manipulate inequalities in multivariable calculus
NEXT STEPS
  • Study the method for setting up triple integrals in cylindrical and spherical coordinates
  • Learn about the projection of surfaces onto the xy-plane
  • Explore the use of Jacobians in changing variables for multiple integrals
  • Practice evaluating triple integrals with varying limits of integration
USEFUL FOR

Students and educators in calculus, particularly those focusing on multivariable calculus and triple integrals, as well as anyone seeking to improve their understanding of integration over complex regions.

bodensee9
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Homework Statement



Can someone see if I have set this up correctly? So I am to evaluate ∫∫∫6xydV. The region lies between z = 1+x+y and above the region in the xy plane bounded by the curves y = √x, y = 0, x = 1.
So, would this be equal to ∫∫∫6xydzdydx, where z is evaluated from 0 to 1+x+y, y is evaluated from √x to -1-x, and x is evaluated from 0 to 1? Thanks!


Homework Equations





The Attempt at a Solution

 
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Your limits for z and x looks fine, but why do you think y goes from [itex]\sqrt{x}[/itex] to [itex]-x-1[/itex]? Where do you get that last mentioned limit for y?
 
I guess because that's where the projection of z = 1+x+y on the xy plane intersects the curve y = √x. so i thought y would range between √x and -1 - x. Thanks.
 

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