Hi

There's this differential equation :

$\displaystyle \cosh(x) y'-\sinh(x) y=\sinh(x)$

Where $\displaystyle y'=\frac{dy}{dx}$

The general solution is $\displaystyle y=k \cosh(x)+y_0$

where $\displaystyle y_0$ is a defined function, solution of the equation.

But I can't find it