(-1/2 cosh(x)/sinh^2(x)+ cosh(x)+tanh(x)sinh(x)+sinh(x))''-(-1/2 cosh(x)/sinh^2(x)+ cosh(x)+tanh(x)sinh(x)+sinh(x))

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.