can anyone tell whre is the error ?

x=-2*pi:0.01:2*pi
%x2=-pi/2:3*pi/25:pi
    y=exp(x)
    z=sqrt(exp(-x))
    figure(3)
    plot(x,y,'b','LineWidth',2,x,z,'r','LineWidth',1)

this code doesn't work can anyone tell me why

[VBBV]

x=-2*pi:0.01:2*pi;
%x2=-pi/2:3*pi/25:pi
    y=exp(x);
    z=sqrt(exp(-x));
    figure(3)
    hold on
    plot(x,y,'b','LineWidth',2); yyaxis right
    plot(x,z,'r','LineWidth',1)

Answer 1

[Stephan]

x=-2*pi:0.01:2*pi;
y=exp(x);
z=sqrt(exp(-x));

figure(3)
p=plot(x,y,'r',x,z,'b');
p(1).LineWidth = 2;
p(2).LineWidth = 1;