	\psset{xunit=1cm,yunit=1cm}
	\begin{pspicture}(-3,-2)(5,6)
		\psaxes[log=x,Dx=1,Dy=10]{->}(-2,-1)(-2,-1)(5,6)
		\psaxes[log=y,Dx=10,Dy=1]{->}(-2,-1)(-2,-1)(5,6)
		\psplot[plotstyle=curve]{-2}{1}{5}
		\psplot[plotstyle=curve]{1}{3}{6 x sub}
		\psplot[plotstyle=curve]{3}{4}{9 x 2 mul sub}
		\psplot[plotstyle=curve]{4}{5}{13 x 3 mul sub}
		\rput[l](5,-1){$\omega$}
		\rput[r](-0.1,6){$\left|A_D\left(\omega\right)\right|$}
	\end{pspicture}