# Proof that this sine equation isn't solvable

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• Nov 16th 2012, 07:00 AM
isatis55
Proof that this sine equation isn't solvable
Hi,I need to show that the following equation is not solvable:
Quote:

$\ddot{\theta}(t)+a\dot{\theta}(t)+b\sin\theta(t)+\ sin\left(ct\right)\sin\theta(t)=0$
Any idea? Thank you
• Nov 16th 2012, 07:26 AM
Prove It
Re: Proof that this sine equation isn't solvable
Is \displaystyle \begin{align*} \theta \end{align*} a function of \displaystyle \begin{align*} t \end{align*}?
• Nov 16th 2012, 08:30 AM
isatis55
Re: Proof that this sine equation isn't solvable
$\theta$ is a function of t.My idea was to use Laplace transorm on the equation, but I am not able to.