The graphs of $f\left(x\right)$, $g\left(x\right)$, and $h\left(x\right)$, are shown above. Below are the graphs of the reciprocal of two of the functions from above. Express $a(x)$ and $b(x)$ in terms of one of the functions listed above.  

3. Sketch the reciprocal of the function that was not used in parts (a) or (b).