Prova OCTAVE 2015
1.
a.
temps=[0 100 200 400 600 800 1000]
temps =
0 100 200 400 600 800 1000
octave:6> I=[1.5e-5 6.7e-6 3.6e-6 1.4e-6 4.7e-7 2.6e-7 9.3e-8]
I =
Columns 1 through 6:
1.5000e-05 6.7000e-06 3.6000e-06 1.4000e-06 4.7000e-07 2.6000e-07
Column 7:
9.3000e-08
octave:7> Integral=trapz(temps,I)
Integral = 0.0023953
b.
tempsint=[0:10:1000];
Iinterp=interp1(temps,I,tempsint,'spline');
Integralinterp=trapz(tempsint,Iinterp)
Integralinterp = 0.0022545
2.
a.
T=[250:20:400];
V=[20:5:100];
R=0.082;
B=0.12
C=0.012
[VV,TT]=meshgrid(V,T)
P=(R*TT).*(1./VV+(B./(VV.^2))+(C./(VV.^3)));
mesh(V,T, P )
xlabel('T')
ylabel('V')
zlabel('P')
print(‘fig1.gif’,’-dgif’)
