Re: rootfinding newtzero answer martin helm AND BPABBOT

[Martin Helm]

Am 15.07.2012 18:05, schrieb john:
> Hellow,
>
> thank you for the message.
>
> But I think  it's not from mathworks I'm not sure,here is the link.
>
> http://www.pudn.com/downloads107/sourcecode/math/detail438905.html
>
> There are other different m-files.
>
> John
>
It has a MathWorks copyright in it!!!

I do not get why you need it, when I simply comment

#[f,err] = fcnchk(f,'vectorized'); % If user passed in a string.

#if ~isempty(err)
#    error(['Error using NEWTZERO:',err.message])
#end

in your newtzero function, all the examples in the help text just work,
because none of it passes a string for the function.
And in case a string would be passed you simply could use eval, not very
clever but should work.