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Torsten
Posts:
1,631
Registered:
11/8/10


Re: Avoid a certain solution w fzero
Posted:
Feb 21, 2013 9:33 AM


"Matt beach" <all.guitars.for.me@gmail.com> wrote in message <kg59cu$dpc$1@newscl01ah.mathworks.com>... > actually, my function isn't a polynominal. It has arctan's, sqrt's, and sine's
Divide your function f(x) by x^n where n is the multiplicity of the zero at x=0. Then the new function g(x)=f(x)/x^n is different from 0 at x=0, but all other roots remain unchanged. Example: f(x)=x^2*(x4) has a zero of multiplicity 2 at x=0. Dividing by x^2, you get g(x)=x4. f(x) and g(x) both share the third root x=4.
Best wishes Torsten.



