March 22nd, 2008, 10:38 AM  #1 
Newbie Joined: Feb 2008 Posts: 16 Thanks: 0  finding length of the curve....
find the length of the curve ; y=ln(cosx), 0<=x<=pi/3 . 
March 22nd, 2008, 03:32 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,770 Thanks: 700  Re: finding length of the curve.... Quote:
dy/dx=sinx/cosx, so ds=secxdx. I'll let you finish.  

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