Assuming I've understood, this is actually very easy to do:
[val,idx] = max(vv1);
max_x = x(idx);
if you run "help max", you'll see that it can pass two outputs: the first is
the actual maximum, and the second is the "first index of the maximum
value". The min function can do the same thing.
Oh, and to display the contents of a variable in MATLAB/octave, you don't
*have to* use disp. Just type the variable name at the prompt and hit
enter; this tells the program to print the contents to the screen.
Andrew
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