@nm 

Thank you for your answer and for the throughput of information.

I gave a try for your example and my first ouput was that the option 

color='magnitude[legacy]'

didn't work for me. Instead of this, I just used 

color=magnitude[blue,red]

and it worked fine.

Thanks, anyway.

@Kitonum 

Thank you. This is actually a full answer I was expecting.

@C_R 

Thank you. I think we can do the same even for the x axis:

yLabel := plots:-textplot([-1, 3, "y"], 'align' = {'below', 'right'}, font = ["times", "roman", 12]);
xLabel := plots:-textplot([4, -0.3000, "x"]);
p := plot((x -> 1/abs(x))(x), x = -4 .. 4);
plots:-display(p, xLabel, yLabel, view = [-4 .. 4, -0.5000 .. 3], labels = ["", ""]);

@mmcdara 

Thanks for replying but my concern is not about the axes. It is about the label location of the axes.

Actually, the answer is quite simple.

     > (A,b,c,d,T):=SSTransformation( Amat, Bmat, Cmat, Dmat, form = ModalCanon, output=['A','B','C','D','T'] );

@tomleslie 

Thank you very much. 

Actually, I tried to do exactly what you did but I could not even to assign the right hand side to p3. For some reason, it says that K is not recognized as a list. So bizarre!

Now it works fine.

Thanks again.

@acer and @mmcdara

Thanks to both of you. Here attached a file where you can find the Maple version I am using.

Untitled.mw

@vv 

Your statement is only correct for Exclusive OR (XOR).