[GSoC 2026] Question about FirstExact class — Rishab Kumar

[Rishab Kumar]

Hi,

I am applying for GSoC 2026 on the ODE integrating factors
project. I have been reading single.py and I have a specific
question:

In FirstExact, the _wilds() method defines pattern variables
P and Q. For my new class FirstExactIntegratingFactorY,
should I define the same wildcards or different ones?

My PR: https://github.com/sympy/sympy/pull/29502

Thanks,
Rishab Kumar