1. Show that (coshx + sinhx)[to the power of] n = coshnx + sinhnx

2. Determine the integral of tanhxdx

3. Determine the integral of 4dx/(e to the x + e to the -x)squared

(Headbang)

PS How can i use the proper math symbols?!!

Thanks!(Rock)

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- October 27th 2009, 05:48 AMdannyshoxHaving trouble with these!
1. Show that (coshx + sinhx)[to the power of] n = coshnx + sinhnx

2. Determine the integral of tanhxdx

3. Determine the integral of 4dx/(e to the x + e to the -x)squared

(Headbang)

PS How can i use the proper math symbols?!!

Thanks!(Rock) - October 27th 2009, 06:22 AMtonio
- October 27th 2009, 06:45 AMdannyshox
I dont understand how u got that in 2.! I was looking at other examples and they use substitution?

Also would it be right to use inegrations by parts in 3.? - October 27th 2009, 09:20 AMtonio
- October 27th 2009, 10:51 AMdannyshox
thanks(Clapping)