June 29th, 2017, 05:09 AM  #1 
Member Joined: May 2017 From: Slovenia Posts: 89 Thanks: 0  Triple integral
Okay so I have given the following problem and the solutions says that the angle phi is between pi/2 and pi/2 and I'm not sure how do we get that? I'm asked to find the mass.

June 29th, 2017, 07:28 AM  #2 
Senior Member Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics  It's a good idea to get an impression of what the inequalities look like by plotting a few points. The base $\displaystyle x^2 + y^2 \leq x$ happens to refer to the unit closed disk centered at $\displaystyle (1, 0)$, occuping the first and fourth quadrants. hence the angle.


Tags 
integral, triple 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Triple Integral  pebblepigs  Calculus  3  April 2nd, 2015 09:10 PM 
Triple Integral Example  Mathfan  Calculus  3  March 31st, 2014 01:09 PM 
Triple integral  Math_user  Calculus  4  March 27th, 2014 06:18 AM 
triple integral  laura123  Calculus  5  May 9th, 2013 10:11 PM 
triple integral  heomoi  Calculus  0  April 6th, 2009 05:55 PM 