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PolynomialQ

PolynomialQ[expr, var]
yields True if expr is a polynomial in var, and yields False otherwise.
PolynomialQ[expr, {var1, ...}]
tests whether expr is a polynomial in the vari.
  • The vari need not be symbols; PolynomialQ[f[a]+f[a]^2, f[a]] True.
EXAMPLESCLOSE ALL
Basic Examples   (2)
Test whether an expression is a polynomial in the specified variable:
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Test whether an expression is a polynomial in the specified set of variables:
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