MATLAB: Plot3 and vector match issue

plot3vector size;

hello all,
I want to plot three functions (f1, f2, Fall) in different vector sizes (x,y) using plot3. Is there a way to do that?
if in case the only way is to have these vectors matched, how can match their sizes in matlab?
here is the code:
 x = 1e3:10e6;    \\ Freq of operation (big vector)
 y = 3e-3:500e-3;   \\resistance in the circuit
 a=1e-6; \\ value that I change every time to get the optimized one
 f1   = 5.*x ;
 f2   = sqrt ((1/(a^2).*(x.^2)) + (5.*(Ron.^2));
 Fall = f1 + f2;
 figure (1); plot3(x,y,f1)
 figure (2); plot3(x,y,f2);
 figure (3); plot3(x,y,Fall);
thanks

Best Answer

N = 10000 ;   % can be changed
% x = 1e3:10e6;    % Freq of operation (big vector)
x = linspace(1e3,10e6,N) ;
% y = 3e-3:500e-3;   %resistance in the circuit
y = linspace(3e-3,500e-3,N) ;
a=1e-6; % value that I change every time to get the optimized one
f1   = 5.*x ;
f2   = sqrt ((1/(a^2).*(x.^2)) + (5.*(Ron.^2)));
Fall = f1 + f2;
figure (1); plot3(x,y,f1)
figure (2); plot3(x,y,f2);
figure (3); plot3(x,y,Fall);
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