(adsbygoogle = window.adsbygoogle || []).push({}); How do I solve the equation: p(t)f''(t)+q(t)f'(t)=Kf(t) ?

I have the equation: p(t)f''(t)+q(t)f'(t)=Kf(t) that results from a problem of physics.

- p(t) and q(t) are two known periodical functions of period T

- f(t) is an unknown function

- K is an unknown constant

What I need is to determine all the possible values of these K constants with the intention of finding the real ones if they exists.

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# How do I solve: p(t)f''(t)+q(t)f'(t)=Kf(t) ?

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