naggy
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I was wondering what to do if I have a DE like this
[tex]x'' + \omega^2x = \cos^2(t) \sin^2(t)[/tex]
I have to decide for what omega it has a solution with period 2pi.
Now to solve this I have to find the Fourier series representation of the right hand side, but the problem is that I get all An = Bn = 0 ??
[tex]x'' + \omega^2x = \cos^2(t) \sin^2(t)[/tex]
I have to decide for what omega it has a solution with period 2pi.
Now to solve this I have to find the Fourier series representation of the right hand side, but the problem is that I get all An = Bn = 0 ??