fzero use with offset

Hi,

is it possible to make an offset with fzero?

I have a function where I found the root with fzero. Now I want to use the same function but with an offset and let fzero compute the root of the function + offset.

Is this possible somehow?

Thank you for your help.

[Torsten]

Define a new function to be your old function plus the offset and call fzero again with this new function.

Best wishes

Torsten.

Answer 1

[Stephen23]

>> fun = @(x) x^2;
>> ofs = 3;
>> z = fzero(@(x)fun(x)-ofs,1)
z =  1.7321

and confirm that the function value is (almost) zero:

>> fun(z)-ofs
ans =  -3.9968e-015
>> fun(z)
ans =  3.0000

[Simon Kreibich]

Oh, I thought I need to add the offset via an option.

Thank you, I solved my problem! Just that simple..