$${h}{\left({\mathtt{x}}\right)} = {\frac{{\mathtt{x}}}{\left({{\mathtt{x}}}^{{\mathtt{2}}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}}$$
I can get to $${h}{\left({\mathtt{\,-\,}}{\mathtt{x}}\right)} = {\mathtt{\,-\,}}\left({\frac{{\mathtt{x}}}{\left({{\mathtt{x}}}^{{\mathtt{2}}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}}\right)$$ but past that... I have no idea.