Plot Graph with different b Values

b = [1/4, 1/2, 1, 2];
figure;
for i=1:b
    M = 1/((1-r.^2).^2+b^2*r.^2);
    plot(r,M);hold on;
end

I want to plot a graph so that M(r) graph will be shown for different values of b. Also, I want to include a legend to keep track of the four lines.

Please help!

Answer 1

[KALYAN ACHARJYA]

b = [1/4, 1/2, 1, 2];
r=1:0.01:5;  % Example Define r, array data
for i=1:length(b)
    M=1./((1-r.^2).^2+b(i)^2*r.^2);
    plot(r,M);
    hold on;
end
legend('b=1/4','b=1/2','b=1','b=2');

Answer 2

[Timo Dietz]

There is no declaration of 'r'. I guess it should be instead of 'i'?

Not sure what exactly you want to plot and/or how 'M' should look like.

In case you want to plot each trace versus b, you can do this:

b = [1/4, 1/2, 1, 2];

figure;

for r=b

M = 1./((1-r^2)^2+b.^2*r^2);

plot(b,M);hold on;

end

legend({'r=0.25', 'r=0.5', 'r=1', 'r=2'});