sin(h)*x*(cosh(x) - x)
(sin(h)*x)*(cosh(x) - x)
(cosh(x) - x)*sin(h) + x*(-1 + sinh(x))*sin(h)
(-2 + 2*sinh(x) + x*cosh(x))*sin(h)
(3*cosh(x) + x*sinh(x))*sin(h)