1. Oct 8, 2008 #1

   Madou

   

   I'm finding the arch length of a curve:
   [tex] $\int_0^b \sqrt{1+sh^2(x/a)} dx$ [/tex]
   How do i integrate this function?

    

   Last edited: Oct 8, 2008

   Madou, Oct 8, 2008
2. 
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3. Oct 8, 2008 #2

   CompuChip

   

   Science Advisor

   Homework Helper

   What do you mean by "count"?
   What is "sh"?
   If it is the hyperbolic sine: cosh^2 - sinh^2 = 1.

    

   CompuChip, Oct 8, 2008
4. Oct 8, 2008 #3

   klondike

   

   I think he meant "evaluate".
   

    

   klondike, Oct 8, 2008
5. Oct 8, 2008 #4

   Madou

   

   The derivative of sinh is cosh and the derivative of cosh is sinh

    

   Madou, Oct 8, 2008
6. Oct 8, 2008 #5

   Madou

   

   It's a pity I can't edit the topic.

    

   Madou, Oct 8, 2008
7. Oct 8, 2008 #6

   CompuChip

   

   Science Advisor

   Homework Helper

   Exactly. Does this mean you have solved the problem?

    

   CompuChip, Oct 8, 2008
8. Oct 8, 2008 #7

   Madou

   

   Next step was to use the equation CC gave me.
   Thank you, guys.

    

   Madou, Oct 8, 2008

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