FOURER SERIES COEFFICIENTS

[Kipster1203]

I know this might be cake for some of you but it's been a while for me...

how would you find the series coefficients of a signal such as
cos(2pi 500t)*sin(2pi 1000t)

and of a square defined by x(t)=1 for 0<t<1, 0 for 1<t<2 and x(t) = x(t+2)

Thanks for the help!!

 

[marzouki]

I know this might be cake for some of you but it's been a while for me...

how would you find the series coefficients of a signal such as
cos(2pi 500t)*sin(2pi 1000t)

and of a square defined by x(t)=1 for 0<t<1, 0 for 1<t<2 and x(t) = x(t+2)

Thanks for the help!!

For the first use: sin(a+b) +sin(a-b)= 2 sin(a)cos(b)
For the second calculate the untegral by hands, it's very simple and obvious