How can I find three roots of F(x)=cosx+0.2x with newton's method?

And,for all roots;I need take n(iteration number) ,but how can I identify iteration number?

thanks so much

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- Dec 10th 2008, 01:05 PMMandelbrotFinding roots with Newton's method
How can I find three roots of F(x)=cosx+0.2x with newton's method?

And,for all roots;I need take n(iteration number) ,but how can I identify iteration number?

thanks so much - Dec 10th 2008, 01:41 PMCaptainBlack
- Dec 11th 2008, 01:22 PMMandelbrot
thank u CB,I will have to study with these roots now,then I'll think about iteration..

thank u so much