Question: Homotopy Analysis Method, NOPH package and solution of ODE with strong nonlinearity and periodic component

Hello, dear forum users!

Does anyone use the method of homotopy analysis (HAM) and the NOPH package in their work. (moderator: link)

It seems to me that only HAM can help.

I ask for help if someone has already mastered.

There are no developments, as I do not own the NOPH package.

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