more lines on plot

I write a code and draw plot,now I want to change one value in code to draw more line on same plot.

can I anybody tell , how to write this code??

[KSSV]

What code you wrote? What change you want? Show us your expectations.

Answer 1

[KSSV]

 T = [0.75 1. 1.25 ]
 for i = 1:length(T)
    t = T(i)
     
    p(1)=1.01*10^5;
    for i=1:9;
        p(i+1)=p(i)+100;
    end
    sd=(Ad*p)/(2*rho*g*Veo);
    kdd=sd*(ad-r*keb);
    kdp=sd*ap;
    kpp=sd*o*(r*kcb+ap);
    kpd=sd*o*ad;
    B=[1 1 1 1 1 1 1 1 1 1];
    C=2*(rw*ep+ed);
    C(1:10)=C;
    D=(1-kdd)+(rw^2+kpp)+4*rw*ep*ed;
    E=2*ed*(rw^2+kpp)+rw*ep*(1-kdd);
    F=(rw^2+kpp).*(1-kdd)+kpd.*kdp;
    B=B';
    C=C';
    D=D';
    E=E';
    F=F';
    w=[B C D E F];
    [m,n] = size(w) ; 
    r = zeros(m,n-1) ; 
    for i = 1:m
        r(i,:) = roots(w(i,:)) ;
    end
    r=real(r);
    r=r(r>=0);
    r=unique(r);
    plot(sd,r);
    hold on
end

[Ali]

This error comes

[KSSV]

In the above code you have not defined many variables......so thats the code I have given....show us the complete code..so that we can help you.

[Ali]

I have define all variables but no plot show by matlab..

[KSSV]

Unless you show whole code, we cannot help.

[KSSV]

What is this line?

i = 0.75:0.30

Did I give in that way? Replace this with

i = 1:length(T) ; 

Any ways your code will give errors. Your code is messy.

[Ali]

what should I do??

[KSSV]

Think about the problem and logic.....why p is a vector in there?