a=[1,2,3];%,50,300]; % using just the first 3 a values, for this demonstration
for i=1:length(a)
ai=a(i);
% y{i}=@(x) (ai/(x+1)-(ai-x)^2+x/(x+ai));
y{i}=@(x) (ai./(x+1)-(ai-x).^2+x./(x+ai)); % using element-wise operations (./ and .^) to vectorize
fplot(y{i});
hold on % using hold on to show multiple lines at once
end
