Mathlean · Online math workspace
Polynomial regression calculator
Fit polynomial coefficients to coordinate pairs.
How to use this calculator
Edit the list of [x,y] pairs and the degree. The starter returns [1,0,1], coefficients in ascending powers.
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
High-degree fits can be ill-conditioned and overfit. A fit is not a guarantee outside the observed range.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.