TeX Quellcode:

\begin{array}{rcl} \displaystyle\int ax^{a+b}\,dx+\displaystyle\int bx^{a+b}\,dx+\displaystyle\int x^{a+b}\,dx &=& \displaystyle\int \left(ax^{a+b} + bx^{a+b} + x^{a+b}\right)\,dx \cr\cr &=& \displaystyle\int \left(a+b+1\right)x^{a+b}\,dx \cr\cr &=& \dfrac{a+b+1}{a+b+1}x^{a+b+1}+c \cr\cr &=& x^{a+b+1}+c\end{array}