How to plot 3 functions inside if loop??

function y=h(x,a,b,lf,t)

 v=length(x);

 for i=1:1:v
     Q=((a-(2*a+lf-x(i)))/a)^2;
    Z=sqrt(1-Q);
    S=((a-x(i))/a)^2;
    T=sqrt(1-S);

    if ((x(i)>=(lf+a))&&(x(i)<=(lf+2*a)))
     plot y(i)=((2*b)+(t)-((2.*b).*Z));
    end;
    if ((x(i)>=0)&&(x(i)<=a))
       plot y(i)=((2*b)+(t)-2*b*T);
    end;
    if ((x(i)>=a)&&(x(i)<=(lf+a)))
      plot y(i)=(t);
    end;

 end;

Answer 1

[Image Analyst]

Look up plot() in the help. You're not even close to using it correctly. You need to set up y on a separate line, then do

y = 2*b.....whatever.
plot(t, y, 'b-');
hold on;

I don't believe the loop over i is even needed.

Answer 2

[Tamer]

 disp(' ')
disp('geometry parameters:')
 w = input('w [mm] = ')*1e-3;
 t = input('t [mm] = ')*1e-3;
 a = input('r [mm] = ')*1e-3;
 b = input('a [mm] = ')*1e-3;
 r = input('b [mm] = ')*1e-3;
 lf = input('lf [mm] = ')*1e-3;
 disp(' ')
 disp('material parameters:')
 E  = input('E [GPa] = ')*1e9;
 mi = input('mi      = ');  
 x=(0:0.01:l)% till length L
 l=lf+2*a;

 alpha = 1.2; 
 G = 0.5*E/(1+mi);

 Q=((a-(2*a+lf-x))/a)^2;
 Z=sqrt(1-Q);
 S=((a-x)/a)^2;
 T=sqrt(1-S);
 y=((2*b)+(t)-((2*b)*Z));
plot (x,y);

[Tamer]

still i am not coming over it i get error with mpower