i solved it but i m not sure, can you check it please?
$\displaystyle
f(x) = \sin (w_0t).\cos(w_0t)
$
Find $\displaystyle a_n,b_n...$
$\displaystyle a_n=0$
$\displaystyle b_n=(t/4)(\sin(cw_0(2-n)(t/2))-\sin(cw_0(2+n).(t/2)))$
i solved it but i m not sure, can you check it please?
$\displaystyle
f(x) = \sin (w_0t).\cos(w_0t)
$
Find $\displaystyle a_n,b_n...$
$\displaystyle a_n=0$
$\displaystyle b_n=(t/4)(\sin(cw_0(2-n)(t/2))-\sin(cw_0(2+n).(t/2)))$