August 19th, 2010, 03:39 PM  #1 
Newbie Joined: Aug 2010 Posts: 7 Thanks: 0  surface integral
Hi; Let S be a sphere of radius r and let p be a fixed point inside or outside the sphere but not on it. Show that gives if p is inside S if p is outside S Thanks... 
August 21st, 2010, 10:55 AM  #2 
Member Joined: Aug 2010 Posts: 49 Thanks: 0  Re: surface integral
Hi, I am sorry, I would like to help you but you should learn first to exactly formulate your problem. For example it is completely nonsense that p is a point () and then you write something like where you use in the integrand. You are talking about a "sphere" which can be defined in any dimension, definition where ,. What is D? I believe I know what you want but please help with a correct definition. A hint in the forefront: Gauß. Regards, Jens 

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