TeX Quellcode:

\begin{array}{rcl} A(t) &=& -\dfrac{4}{3}t^4+\dfrac{4}{3}t^2 \cr \cr A'(t) &=& -\dfrac{16}{3}t^3+\dfrac{8}{3}t \cr \cr 0 &=& -\dfrac{16}{3}t^3+\dfrac{8}{3}t \cr &...& \cr t_1 &=& -\dfrac{\sqrt{2}}{2} \cr t_2 &=& 0 \cr t_3 &=& \dfrac{\sqrt{2}}{2} \end{array}