%Figure 2.6 (explained in Example 2.2)

% Plant (2.26), G(s)=3(-2s+1)/(5s+1)(10s+1)
Eq2_26

clf;
subplot(211);
vplot('liv,lm',g_f,[0.4 0.01;0.4 0.41;0.01 0.41;3 Inf],'g:');
axis([0.01 10 0.01 10]);
text(.015,.7,'0.4');
subplot(212);
vplot('liv,p',g_f);hold  %hold on
vplot('liv,d',[-180 0.01;-180 0.41;0 0.41;3 Inf],'w:');
axis([0.01 10 -300 0]);
text(.015,-160,'-180');
hold                     %hold off



