Graph two curves in the same plane

Hello! I'm trying to graph the function e1 and e2 in the same plane but I can't. Could you please help me :(

%Permitividad Parte Real

e_inf = 11.7 ;

Wp1 = 1.0856e11;

gamma1 = 2.3518e9 ;

Wp2 = 3.4330e11;

gamma2 = 5.6747e9 ;

w1 = 1e11;

w2 = 1e10;

w3 = 1e15;

index = 0;

K = w1:w2:w3;

% Loop is not necessary!

e1 = e_inf - ((Wp1^2)./K.^2+1i*K*gamma1);

e2 = e_inf - ((Wp2^2)./K.^2+1i*K*gamma2);

f=K;

x=f;

y1 = real(e2);

semilogx(x,y1, 'linewidth',2), grid on

hold on

y2 = real(e2);

semilogx(x,y2, 'linewidth',2), grid on

hold off

[Yordani]

Hello! Yes thank you very much :D

[Sulaymon Eshkabilov]

Most welcome! Glad to help

Answer 1

[Sulaymon Eshkabilov]

To plot two curves are simple as follows:

e_inf = 11.7 ;           
Wp1    = 1.0856e11;               
gamma1 = 2.3518e9 ;
Wp2    = 3.4330e11;
gamma2 = 5.6747e9 ;
w1 = 1e11;               
w2 = 1e10;               
w3 = 1e15;   
index = 0;
K = w1:w2:w3;
% Loop is not necessary!
e1 = e_inf - ((Wp1^2)./K.^2+1i*K*gamma1);  
e2 = e_inf - ((Wp2^2)./K.^2+1i*K*gamma2);  
f=K;
x=f;
figure
y1 = real(e1);
semilogx(x,y1, 'r-','linewidth',2, 'displayName', 'e_1')
hold on 
y2 = real(e2);
semilogx(x,y2, 'b-', 'linewidth',2,'displayName', 'e_2'), grid on
hold off 
legend('toggle')

[Walter Roberson]

in particular you had used real(e2) for both y1 and y2