February 13th, 2014, 10:00 AM  #1 
Member Joined: Feb 2014 Posts: 30 Thanks: 0  Multivariable Calculus problem I set 1<=cos<=1 and get the limit of the whole thing is 0. But it look like it may be DNE on the graph. Can someone help me? This looks like it has limit =0 but I'm not sure, I tried approaching 0,0 in different ways and they came out to be 0. But I don't know how to prove that it is. Thank you 
February 13th, 2014, 10:37 AM  #2 
Member Joined: Feb 2014 Posts: 30 Thanks: 0  Re: Multivariable Calculus problem
Please help me

February 13th, 2014, 12:16 PM  #3 
Senior Member Joined: Dec 2013 From: some subspace Posts: 212 Thanks: 72 Math Focus: real analysis, vector analysis, numerical analysis, discrete mathematics  Re: Multivariable Calculus problem
Have you tried to express the functions in polar coordinates? In that way it should be easier to see what's going on.

February 13th, 2014, 01:28 PM  #4 
Member Joined: Feb 2014 Posts: 30 Thanks: 0  Re: Multivariable Calculus problem I don't think it's gonna go anywhere 
February 13th, 2014, 01:32 PM  #5  
Global Moderator Joined: May 2007 Posts: 6,834 Thanks: 733  Re: Multivariable Calculus problem Quote:
 
February 13th, 2014, 02:10 PM  #6  
Member Joined: Feb 2014 Posts: 30 Thanks: 0  Re: Multivariable Calculus problem Quote:
Thank you  
February 13th, 2014, 04:08 PM  #7 
Member Joined: Feb 2014 Posts: 30 Thanks: 0  Re: Multivariable Calculus problem
Can you show me how to do it please?

February 15th, 2014, 01:15 PM  #8  
Global Moderator Joined: May 2007 Posts: 6,834 Thanks: 733  Re: Multivariable Calculus problem Quote:
 

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