MATLAB: How to plot with different calibrations

calibrationplotsubplot

Hi, I want to make subplots with different calibrations,
syms a
%a=2
b=2, e=0.9 , q=0.4, g=0.6, k=0, d=0.5
N(a) = (q*b*e/a-d*e)/((q^2)*(e^2)/a+2*e*g)
pi(a)=(b-q.*N.*e)./a
a=1:0.1:5
N(a)
plot (a,N(a),'b')
hold on
plot (a, pi(a),'red')
I have plotted two graphs in one figure.
Now I want to do the same thing with different calibration of parameters in subplot. How to do that?