CoefficientList

Usage

• CoefficientList[poly, var] gives a list of coefficients of powers of var in poly, starting with power 0.
• CoefficientList[poly, {, , ... }] gives an array of coefficients of the .

Notes

• Example: CoefficientList[x^2 + 2 x y - y,

x, y

]

• The dimensions of the array returned by CoefficientList are determined by the values of the Exponent[poly,

• Terms that do not contain positive integer powers of a particular variable are included in the first element of the list for that variable.

• CoefficientList always returns a full rectangular array. Combinations of powers that do not appear in poly give zeros in the array.

• CoefficientList[0, var] gives {}.

• CoefficientList works whether or not poly is explicitly given in expanded form.

• See Section 3.3.2.

• New in Version 1; modified in 3.

Further Examples