integral of equation with known boundary

Ep = 1.27;
SDB = 0.19 ;
Delta = 0.44 ;
U = 0.2 ;
T = 300 ;
Teq = 500 ;
Nh = 5*10^21 ;
Nsisi = 2*10^23 ;
k = 8.61733*10^(-5); 
q = 1.602*10^-19; 
Ef = 0.35 ;
Evp = 0 ;
Eu = 0.085 ;
x = linspace(0, 1.7);
Gamma = Nv.*(Nh/Nsisi).^((k.*Teq)/(4*Eu)).*((2*Eu.^2)./((2*Eu)-(k.*Teq))).*exp(-(1/(2*Eu)).*(Ep-Evp-((SDB.^2)./(4*Eu)))); 
Pegd = (1./sqrt(2*SDB.^2*pi)).*exp((-((x+k.*Teq*log(2)-Ep)+((SDB.^2)./(2*Eu))).^2)./(2*SDB.^2));
Fe_eq = 1./(1+exp(x-Ef)/(k.*Teq));
Fegd = 1./(1+exp((x+k.*Teq*log(2))-Ef)/(k.*Teq));
De_eq = Gamma.*((2./Fe_eq).^((k.*Teq)./(2*Eu))).*Pe ; 
Degd = Gamma.*((2./Fegd).^((k.*Teq)./(2*Eu))).*Pegd;
Pega = (1./sqrt(2*SDB.^2*pi)).*exp((-((x-U-k.*Teq*log(2))+((SDB.^2)./(2*Eu))-Ep).^2)./(2*SDB.^2));
Fe_eq = 1./(1+exp(x-Ef)/(k.*Teq));
Fega = 1./(1+exp((x-U-k.*Teq*log(2))-Ef)/(k.*Teq));
Dega = Gamma.*((2./Fega).^((k.*Teq)./(2*Eu1))).*Pega;
y = @(x)((Degd.*(1-Fegd))+(Dega.Fegd));
F = int(y, 0, 1.7); plot(F,x, [0 1.7]);xlabel('x'), ylabel ('y');

I'd like to know why there is a mistake to obtain intergal graph by this code.

I've received the message "Check for missing argument or incorrect argument data type in call to function 'int'. "

Thanks for the advance.

[Alan Stevens]

Try "integrate" instead of "int".

[sookyung Kang]

I tried and still it is not fixed.

Answer 1

[Alan Stevens]

Sorry, i meant "integral". However, there were some other problems, but the code below works:

Ep = 1.27;
SDB = 0.19 ;
Delta = 0.44 ;
U = 0.2 ;
T = 300 ;
Teq = 500 ;
Nh = 5*10^21 ;
Nsisi = 2*10^23 ;
k = 8.61733*10^(-5); 
q = 1.602*10^-19; 
Ef = 0.35 ;
Evp = 0 ;
Eu = 0.085 ;
Nv = 1; Pe = 1; Eu1 = 1; %%%%%%%%%%%%% You need to enter the correct values here.
x = linspace(0, 1.7);  
Gamma = Nv.*(Nh/Nsisi).^((k.*Teq)/(4*Eu)).*((2*Eu.^2)./((2*Eu)-(k.*Teq))).*exp(-(1/(2*Eu)).*(Ep-Evp-((SDB.^2)./(4*Eu)))); 
Pegd = (1./sqrt(2*SDB.^2*pi)).*exp((-((x+k.*Teq*log(2)-Ep)+((SDB.^2)./(2*Eu))).^2)./(2*SDB.^2));
Fe_eq = 1./(1+exp(x-Ef)./(k.*Teq));
Fegd = 1./(1+exp((x+k.*Teq*log(2))-Ef)./(k.*Teq));
De_eq = Gamma.*((2./Fe_eq).^((k.*Teq)./(2*Eu))).*Pe ; 
Degd = Gamma.*((2./Fegd).^((k.*Teq)./(2*Eu))).*Pegd;
Pega = (1./sqrt(2*SDB.^2*pi)).*exp((-((x-U-k.*Teq*log(2))+((SDB.^2)./(2*Eu))-Ep).^2)./(2*SDB.^2));
Fe_eq = 1./(1+exp(x-Ef)./(k.*Teq));
Fega = 1./(1+exp((x-U-k.*Teq*log(2))-Ef)./(k.*Teq));
Dega = Gamma.*((2./Fega).^((k.*Teq)./(2*Eu1))).*Pega;
y = @(x)((Degd.*(1-Fegd))+(Dega.*Fegd));

F = integral(y, 0, 1.7,'ArrayValued',true); 
plot(x,F);xlabel('x'), ylabel ('y');

[sookyung Kang]

It works! Thanks a lot :)