- TeX source:
- \begin{array}{|c|c|c|c|c|c|c}
\hline x & f(x) & g(x) & f^{\prime}(x) & g^{\prime}(x) & (f \circ g)(x) & \text { ( fog })^{\prime}(x) \\
\hline-2 & 2 & -1 & 1 & 1 & & \\
-1 & 1 & 2 & 0 & 2 & & \\
0 & -2 & 1 & 2 & -1 & & \\
1 & 0 & -2 & -1 & 2 & & \\
2 & 1 & 0 & 1 & -1 & &
\end{array}