Hi, I need calculate the length of a curve. Could someone help me please?

http://www.sdilej.eu/pics/ce653c1004...5e0762a89e.JPG

Formula:

http://www.sdilej.eu/pics/876126889a...ec1106c34.jpeg

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- December 6th 2010, 08:22 AMsnopyLength of a curve
Hi, I need calculate the length of a curve. Could someone help me please?

http://www.sdilej.eu/pics/ce653c1004...5e0762a89e.JPG

Formula:

http://www.sdilej.eu/pics/876126889a...ec1106c34.jpeg - December 6th 2010, 08:26 AMAckbeet
Well, what have you tried so far?

- December 6th 2010, 09:20 AMsnopy
I can not derivative and exponentiate: (

- December 6th 2010, 09:31 AMAckbeet
You can't differentiate your function? Differentiation is like an onion: you have to peel back the layers, in inverse order in which you would compute. Let's say you take your function

and you want to find List all the computations you must do, in order, in order to find this value. - December 6th 2010, 09:47 AMsnopy
Thatīs right?

derivate:

http://www.sdilej.eu/pics/0454ed704b...950ac22cc9.JPG

exponentiation:

http://www.sdilej.eu/pics/f7e5067972...85ffbdbb17.JPG - December 6th 2010, 09:49 AMAckbeet
No, I'm afraid your differentiation is incorrect. What differentiation rule do you have to use here?

- December 6th 2010, 11:24 AMHallsofIvy
Try writing as .