• Coefficient[expr, form] gives the coefficient of form in the polynomial expr.
• Coefficient[expr, form, n] gives the coefficient of form^n in expr.
picks only terms that contain the particular form specified.
is not considered part of
• form can be a product of powers.
• Coefficient[expr, form, 0] picks out terms that are not proportional to form.
• Coefficient works whether or not expr is explicitly given in expanded form.
• New in Version 1; modified in 3.