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matlab

data=[313.15                6383
    323.15                5416.33
    373.15                1816.32
    423.15                908
    473.15                582.12
    523.15                424
    573.15                358.6];
x=data(:,1);
y=data(:,2);

P=polyfit(x,y,4);
disp('P=')
disp(P')
XX=300:580;
PP=polyval(P,XX);
plot(x,y,'*',XX,PP,'r')
y0=polyval(P,x);
fprintf('\t\t\tx\t\t\t\t\ty\n')
disp([x,y0])
14Â¥2009-07-11 13:55:03
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