Question: PDE arbitrary function


I was wondering if anyone could help me with my problem.

I have an equation where I have an arbitrary function that I have been calling h(y^2-k^2*x^2) where h can be any function (e.g. sin, ln, ...).

I have to perform a few operations on the equation and I end up with a pde equal to 0. The operations I perform on my original equation leads maple to differentiate h at times with respect to x or y and so, for example, I end up with terms like D(h)(y^2-k^2*x^2)*2*y

I would like maple to tell me what function h could be for the equation to cancel out to 0.

I have tried solve and pdsolve but cannot get anywhere with those.

Is there anyway maple can achieve this?

Thank you in advance for any help.

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