I just wanted to check something. The equation(adsbygoogle = window.adsbygoogle || []).push({});

∂^{2}φ / ∂x^{2}+ ∂^{2}φ / ∂y^{2}= sin(xy)

Was given as an example of a separable equation. I can't separate it, and I found online that to use separation of variables the equation should be linear, which this isn't? Is there a way of separating this?

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# Separation of variables PDEs

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