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ALGEBRA

BASIC

CALCULUS

CAS

DATA

ELEMENTARY

GRAPHING

MANUAL

MATRIX

NUMBER

PLOT

SCRIPTING

SPECIAL

SPECIAL POLYNOMIALS

STATISTICAL

TRIGONOMETRIC

VECTOR CALCULUS
  PolyFit(pList, var)
pList
A list with datapoints given in a [N,2] matrix. This list should be greater than 1 and less than 11.

var
Optional variable for the returned polynomial. If not given, then var=x.


Description
Finds a unique polynomial function of order N-1 through the given N data points.


Examples  
Finds the line between the point [1,3] and [5,7]


Finds the parabolic curve through the points [2,4], [3,1], [5,7]


Finds the cubic curve through the points [0,1], [2,5], [3,4], [5,7]



References
http://mathworld.wolfram.com/LagrangeInterpolatingPolynomial...
http://en.wikipedia.org/wiki/Lagrange_polynomial




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