• Exponent[expr, form] gives the maximum power with which form appears in the expanded form of expr.
• Exponent[expr, form, h] applies h to the set of exponents with which form appears in expr.
• Example: Exponent[x^2 + a x^3, x]
• The default taken for h
• Example: Exponent[x^2 + a x^3, x, List]
• form can be a product of terms.
• Exponent works whether or not expr is explicitly given in expanded form.
• Exponent[0, x] is -Infinity.
• New in Version 1; modified in 3.