October 5th, 2008, 09:14 AM  #1 
Senior Member Joined: Sep 2008 Posts: 105 Thanks: 0  Length of the Asteroid
Find the length of the asteroid x^(2/3) + y ^(2/3) = 1. How can I do this without limits? Using the arc length formula, I came up with (3/2) x ^ (2/3) after integrating. Now what? 
October 5th, 2008, 09:41 AM  #2 
Guest Joined: Posts: n/a Thanks:  Re: Length of the Asteroid
Solving for y we get: Find the derivative, square it, add 1 and take the square root. And it whittles down to BTW, it is an 'astroid'. No e 
October 5th, 2008, 11:28 AM  #3 
Senior Member Joined: Sep 2008 Posts: 105 Thanks: 0  Re: Length of the Asteroid
Got it. Thanks! We never went over that in class, and it just appeared on our takehome. And thanks for the correction. The professor tends to mix up words. He once went through a lecture with the word "antisemitic" on the board instead of "antisymmetric". 

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