How to plot unitstep function??

I want plot grap

but doesn't work

thank you

[the cyclist]

For future questions, it is more helpful if you paste the code itself -- not an image of the code -- so that we can copy into the MATLAB editor. (Or upload a *.m file with the code.)

Answer 1

[the cyclist]

I think you want to enclose these terms

exp(-3*t) - exp(-6*t)

in parentheses, so that they are both multiplied by the heaviside function.