\( \begin{aligned} f(x) &=\frac{1}{10}\left(x^{3}+6 x^{2}\right) \\ &=\frac{1}{10 }x^{3}+\frac{3}{5} x^{2} \end{aligned} \)
\( \begin{aligned} F(x) &=\frac{1}{10}: 4 \cdot x^{4}+\frac{3}{5}: 3 \cdot x^{3}+C \\ &=\frac{1}{40} x^{4}+\frac{1}{5} x^{3} +C\\ &=\frac{1}{40}\left(x^{4}+8 x^{3}\right)+C \end{aligned} \)
jetzt klar?