Informatică

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Subiectul  I
Ex. 1
octave-3.6.4.exe:2> k=32;
octave-3.6.4.exe:3> x=1900:10:2000;
octave-3.6.4.exe:4> y=[75.995 91.972 105.711 123.203 131.669 150.697 179.323 203.212 226.505 256.505 281.422];
octave-3.6.4.exe:5> y=y/k;
octave-3.6.4.exe:6> p=polyfit(x,y,3)
p =6.5444e-008  -7.1254e-005  -4.0471e-001  5.7974e+002
Ex. 2
octave-3.6.4.exe:7> val=polyout(p,"x")
val = 6.5444e-008*x^3 - 7.1254e-005*x^2 - 0.40471*x^1 + 579.74
octave-3.6.4.exe:8> val = 6.5444e-008*x.^3 - 7.1254e-005*x.^2 - 0.40471*x.^1 + 579.74
val =
Columns 1 through 8:
2.4445   2.8075   3.2314   3.7163   4.2628   4.8712   5.5420   6.2754
Columns 9 through 11:
7.0720   7.9321   8.8560

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