November 26th, 2011, 11:16 AM  #1 
Member Joined: Sep 2010 Posts: 39 Thanks: 0  arc length
total arclength as (t) goes from 0 to pi/2: x(t)=e^t cos(t) y(t)=e^t sin(t) ds=sqrt ((dx/dt)^2+(dy/dt)^2) dt? thanks. 
November 26th, 2011, 11:56 AM  #2 
Senior Member Joined: Oct 2011 From: Belgium Posts: 522 Thanks: 0  Re: arc length
calculate derivatives and write down the integral which is easy to solve 

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