Question

Can you solve ((e^y+e^(-y))/2)*((e^y+e^(-y))/2)

Answer 1

Solve what? This is just an expression, do you want to simplify it or find its zeros?

Answer 2

I think you want to simplify it. Actually the given expression doesn't have any zeros.

Answer 3

I have to integrate it from 0- ln(2). I didn't know if you could simplify the expression.

Answer 4

0 to ln(2) I should say.

Answer 5

The given expression is equal to \(\cosh^2(x)\).

Answer 6

With h standing for..?

Answer 7

Oh you don't know the hyperbolic cosine function. It's better that you read about it. http://en.wikipedia.org/wiki/Hyperbolic_function

Answer 8

You still can solve it without knowing that though.
\[\int\limits ({e^y+e^{-y} \over 2})^2 dy=\int \frac{1}{4}(e^{2y}+e^{-2y}+2)dy=\cdots\]