Understanding Integration Limits for Spherical and Cartesian Coordinates

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SUMMARY

This discussion focuses on the integration limits for spherical and Cartesian coordinates, specifically addressing the volume integral equations ∫V r²Sinθdθdφdr for spherical coordinates and ∫V dxdydz for Cartesian coordinates. The problem involves a sphere displaced along the y-axis, leading to a quarter-sphere integration scenario. Participants seek clarification on translating the origin to the shape's center and verifying the limits of integration, particularly the origin shift and the factor of 2 in the calculations.

PREREQUISITES
  • Understanding of spherical coordinates and their volume integrals
  • Familiarity with Cartesian coordinates and their volume integrals
  • Knowledge of the equation of a sphere: x²+y²+z²=r²
  • Basic calculus concepts, particularly integration techniques
NEXT STEPS
  • Review the process of translating the origin in coordinate systems
  • Study the derivation of integration limits for spherical coordinates
  • Learn about the geometric interpretation of volume integrals in different coordinate systems
  • Investigate the significance of factors in integration, particularly in volume calculations
USEFUL FOR

Students studying calculus, particularly those focusing on multivariable integration, as well as educators and tutors assisting with coordinate transformations and volume integrals.

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Homework Statement


Shown in the photo attached.
Screen Shot 2017-02-12 at 11.05.57.png


2. Homework Equations

V r2Sinθdθdφdr in spherical coordinates
V dxdydz in cartesian coordinates
equation of a sphere x2+y2+z2=r2

The Attempt at a Solution


In this case y=(y-2): sphere displaced on the y-axis. and since it is bound by all planes its going to be one quarter of a sphere. I don't get the part where the question says translate the origin to the shape centre, how can I do this? and also I need someone to check my limits of integration. I attached my answer.
IMG_7777.JPG
 
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Hi,

Can't say I understand your integration limits for the second part. Care to explain ? And where does the factor 2 come from ?
 

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