TeX Quellcode:

\begin{array}{rcl} -f(-x) &=& - \left( \dfrac{1}{3} (-x)^4 +12 \right) \cr \cr &=& - \left( \dfrac{1}{3} x^4 +12 \right) \cr \cr &=& - \dfrac{1}{3} x^4 -12 \cr \cr & \neq & f(x) \end{array}