Fit a third-degree polynomial y = a + bx + cx² + dx³ to your data using least-squares method
Last updated: March 2026
Enter at least 4 points. One pair per line (comma or space separated).
CUBIC EQUATION
a (intercept)
1.0000
b (linear)
0.0000
c (quadratic)
0.0000
d (cubic)
1.0000
R² (Fit Quality)
1.000000
Points Fitted
6
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