num=[1];
den=[5 0];
sys = tf(num,den);
bode(sys)
v=axis;
v(4) = -88.6;
axis(v)
grid on

set(1, 'PaperUnits', 'centimeters')
set(1, 'PaperPosition', [3 10 11 9])
print -deps 'obr439.eps'

