# im having trouble with this one. thanks for any help

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• Apr 2nd 2008, 09:32 AM
waite3
im having trouble with this one. thanks for any help
Find the length of the curve.

x=3y^(3/4) - (3/32)y^(2/3); -8≤y≤216

L=?

thanks for any help
• Apr 2nd 2008, 09:36 AM
Jhevon
Quote:

Originally Posted by waite3
Find the length of the curve.

x=3y^(3/4) - (3/32)y^(2/3); -8≤y≤216

L=?

thanks for any help

are you sure you set up the integral right?

$L = \int_{-8}^{216} \sqrt{1 + [x']^2}~dy$
• Apr 2nd 2008, 09:57 AM
waite3
what do you come out with for an answer because my answer is way off
• Apr 2nd 2008, 10:27 AM
Mathnasium
How did you set up the integral?

How do you know your answer is way off?

Letting us know what you have done so far would be far better than just telling you the answer.
• Apr 3rd 2008, 11:55 AM
waite3
i keep getting 3843 and its not the right answer can anyone help me out thanks
• Apr 3rd 2008, 02:19 PM
xifentoozlerix
Unless I am missing something here, this integral can only be solved numerically....