Indicatie 2
(1)
\begin{align} \frac{k}{{k^{4}}+{k^{2}}+1} = \frac{k}{({k^{4}}+{2}{k^{2}}+1)-{k^{2}}}= \frac{k}{({{k^{2}} + k +1})\ {({k^{2}} -k +1})} = \frac{1}{2}[\frac{1}{{k^{2}}-k+1} -\frac{1}{{k^{2}}+k+1}] \end{align}
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License