TeX Quellcode:

\begin{array}{rcl}\displaystyle\int \limits_{\frac{1}{2}}^t \left(\dfrac{1}{x^3}-\dfrac{1}{x^2} \right) \, dx &=& \left[-\dfrac{1}{2x^2}+\dfrac{1}{x}\right]_{\frac{1}{2}}^t \cr \cr &=& -\dfrac{1}{2t^2}+\dfrac{1}{t} -\left(-\genfrac{}{}{1pt}{0}{1}{2\cdot \left(\frac{1}{2}\right)^2}+\genfrac{}{}{1pt}{0}{1}{\frac{1}{2}}\right) \cr \cr &=& -\dfrac{1}{2t^2}+\dfrac{1}{t} \end{array}