MATLAB: Use f=@(x) as an argument of a function.m

functionsmatlab function

I have the function
    function [ k ] = New_Raph( f,df,x,tol)
    x_old =x;
    x=1000;
    while abs(x_old-x) > tol
        x_old = x;
        delta=-f(x)/df(x);
        x= x-delta;
    end
    k=x;
    end
And i want to calculate in a new .m file:
    f=@(x) x.^5-0.4475.*x.^4-3.1.*x.^3+3.085.*x.^2-0.962.*x+0.0943;
    df1=@(x) 5.*x.^4-1.79.*x.^3-9.3.*x^2+6.17.*x-0.962;
    New_Raph(@f1,@df1,0,0.1)
What is wrong?

Best Answer

Replace
    New_Raph(@f1,@df1,0,0.1)
by
    New_Raph(f,df1,0,0.1)
f or f1 - a typo?
&nbsp
Addendum triggered by &nbsp It did not work
Try this example
    >> my_sin = @(x) sin(x)
    my_sin = 
        @(x)sin(x)
    >> arrayfun( my_sin, pi/6*[1,2,3] )
    ans =
        0.5000    0.8660    1.0000
    >> arrayfun( @sin, pi/6*[1,2,3] )
    ans =
        0.5000    0.8660    1.0000
and
    >> arrayfun( @my_sin, pi/6*[1,2,3] )
    Error: "my_sin" was previously used as a variable, conflicting with its use 
    here as the name of a function or command.
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