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Make a integral with matlab

  1. Oct 27, 2008 #1
    ******urgent

    i have a project to make a integral with matlab
    when i make a code i have an error. this is the code

    f = str2double(get(edit1,'string'));
    a = str2double(get(edit2,'string'));
    b = str2double(get(edit3,'string'

    chose = get(popup1,'value');
    switch pilihan
    case 1
    f=@x;
    case 2
    f=@y;
    end;

    f=quad(f,a,b);

    if a >= b
    disp('you.re wrong!!!!!!');
    end


    and i get error in

    ??? Undefined function or method 'x' for input arguments of type 'double'.

    Error in ==> quad at 77
    y = f(x, varargin{:});

    Error in ==> luas1b at 13
    f=quad(f,a,b);

    ??? Error while evaluating uicontrol Callback

    and i want to ask 1 more if i want to plot with unknown function do you know what is the code
     
  2. jcsd
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