How to plot overlapped graphs better?

I have a two different data called Desired and Simulated output. The difference between the data is around 0.003-0.006 and I want to plot these two data in the same graph. Since the difference between them is very small, they overlap with each other as seen below on the graph. how to properly plot these two data in one graph.

figure(3)
plot(t,mu_true,"b-"); hold on
plot(t,mu_predicted , "r-");
xlabel('t'); ylabel('result 1')
legend('desired output', 'simulated output');

Answer 1

[Voss]

Maybe make top line dotted:

figure(3)
plot(t,mu_true,"b-"); hold on
plot(t,mu_predicted , "r:");
xlabel('t'); ylabel('result 1')
legend('desired output', 'simulated output');

[Ararat Cetinkaya]

I tried to use different types of lines but still it doesn't look good.

[Voss]

You might also try making the line underneath wider:

figure(3)
plot(t,mu_true,"b-",'LineWidth',3); hold on
plot(t,mu_predicted , "r:");
xlabel('t'); ylabel('result 1')
legend('desired output', 'simulated output');