Mathlean · Online math workspace
Polynomial coefficient calculator
Extract polynomial coefficients in descending powers of a chosen variable.
How to use this calculator
Edit CoefficientList(expression,variable). For 3x squared plus 2x plus 1, the list is [3,2,1].
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
Missing powers contribute zero coefficients. This order differs from PolynomialFit, which returns ascending powers.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.