limit of angle

Mar 2014
909
2
malaysia
can someone explain about the limit of ∅ is taken from 0 to pi only? [FONT=&quot]
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Dec 2013
2,002
757
Colombia
Just think about what parts of the sphere are covered by \(\displaystyle (\rho,\theta)\) for each individual value of \(\displaystyle \phi\).

These questions about limits on multiple integrals are almost pure geometrical questions. If you can visualise what is going on, you will have your answers.