Plot Bode asymptote from Transfer Function

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monkey_matlab 2018-10-7

编辑： monkey_matlab 2018-10-7

Hello,

I have a simple transfer function and able to plot the exact Bode Diagram:

num = [2 100];
den = [0.25 1 1 0];
Hs = tf(num,den)
bodeplot(Hs)
grid on

I know that the approximated Bode plot should look like this:

How do I go about getting the approximated Bode plot to show up in my plot also?

Thanks for your help

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R2017a

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