Data: (1,3), (2,1), (4,-2)

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Lecture 22 Least Squares
Data (1,3), (2,1), (4,-2) Model yab t a9/2
b-23/14 r2 14(-1/2)
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Download leastsquareexamp.m
Example of Least Squares with polyfit and
polyval x0-1 0 1 3 4 y02 0 0 -2
-2 cpolyfit(x0,y0,2) x-10.014 ypolyval(c,
x) plot(x0,y0,'o',x,y)
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Inclass
Find least square fit of data x0-1 0 1 3
5 y02 0 -1 -2 -4 To cubic polynomial
f(t)abtct2dt3