find part of an expression which is a form
any Maple expression, but usually a product
The function formpart is most effective on products. It will try to simplify other expressions to products.
This function removes scalars and constants from a product, leaving only that part which is a form, or is undeclared.
This function and scalarpart can be used to separate a product into form and scalar parts.
The command with(difforms,formpart) allows the use of the abbreviated form of this command.
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