The function h(x)=1x+1\displaystyle {h}{\left({x}\right)}=\frac{{1}}{{{x}+{1}}} can be expressed in the form f(g(x))\displaystyle {f{{\left({g{{\left({x}\right)}}}\right)}}} where g(x)=(x+1)\displaystyle {g{{\left({x}\right)}}}={\left({x}+{1}\right)} and f(x)\displaystyle {f{{\left({x}\right)}}} is defined as:

f(x)\displaystyle {f{{\left({x}\right)}}}=   ,