TeX Quellcode:

\begin{array}{rcl} \displaystyle\int \limits_2^4 42^y \, dy &=& \left[ \dfrac{42^y}{\ln(42)} \right]_2^4 \cr\cr &=& \dfrac{42^4}{\ln(42)} - \dfrac{42^2}{\ln(42)} \cr\cr &\approx& 832.051{,}07 \end{array}