TeX Quellcode:

\begin{array}{rcl} -f(-x) &=& -\left(-(-x)^6+7(-x)^2-25\right) \cr &=& -\left(-x^6 + 7x^2-25\right) \cr &=& x^6-7x^2+25 \cr & \neq & f(x) \end{array}