dsolve(diff(y(x),x) = y(x)*(-1-cosh((1+x)/(x-1))*x+cosh((1+x)/(x-1))*x^2*y(x)-cosh((1+x)/(x-1))*x^2+cosh((1+x)/(x-1))*x^3*y(x))/x,y(x))