Figure 9
![Figure 9](http://media.springernature.com/full/springer-static/image/art%3A10.1155%2F2009%2F327503/MediaObjects/13637_2008_Article_48_Fig9_HTML.jpg)
(a) and (b)
versus control parameter
. Below the saddle-node bifurcation (SN), both values are almost constant. The SN causes a jump in both error functions. Since the Hopf bifurcation (HB) is supercritical, the error changes only smoothly around this value.