How to solve this fourier series/ boundary value on matlab?

Can anyone tell me how to compute this on matlab? show the codes in step etc...

[darova]

use ode45

[Suhayl Mlb]

Hi, Thanks for replying...but i don't know too much on matlab...never solved any fourier series on it... If possible can you write the steps to execute it? Thanks

Answer 1

[darova]

here is a start

function res = f(t)
if t < 1
    res = t;
elseif t < 2
    res = 1;
else
    res = 3-t;
end
end

and use ode45 to solve it

[Suhayl Mlb]

Ok thanks ... but how about the y" +3y = f(t) How to compute it?

[Suhayl Mlb]

I tried it but i got this:

[darova]

I only helped you with f(t) function. The rest is up to you

Read help: ode45