combine 2 plot with different length

I have 2 plot with deffrent length.. How I can combine to to gather?

[darova]

Can you be more specific? Post the code

Answer 1

[dpb]

plot(x1,y1)
hold on
plot(x2,y2)

or

plot(x1,y1,x2,y2)

[Ishaq Alshuaili]

I well try

thank you