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

Printable View

- Dec 6th 2010, 09:22 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 - Dec 6th 2010, 09:26 AMAckbeet
Well, what have you tried so far?

- Dec 6th 2010, 10:20 AMsnopy
I can not derivative and exponentiate: (

- Dec 6th 2010, 10:31 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. - Dec 6th 2010, 10:47 AMsnopy
Thatīs right?

derivate:

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

exponentiation:

http://www.sdilej.eu/pics/f7e5067972...85ffbdbb17.JPG - Dec 6th 2010, 10:49 AMAckbeet
No, I'm afraid your differentiation is incorrect. What differentiation rule do you have to use here?

- Dec 6th 2010, 12:24 PMHallsofIvy
Try writing as .