Newton raphson Watch

sarah12345
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Report Thread starter 12 years ago
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Hi ive been trying to find out under what conditions the newton raphson method may not converge to give the desired root and im not havin any luck can someone tell me

thanks alot
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gyrase
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(Original post by sarah12345)
Hi ive been trying to find out under what conditions the newton raphson method may not converge to give the desired root and im not havin any luck can someone tell me

thanks alot
It's to do with the gradient. If you have a function f(x) and you wish to calculate f(x) = 0, then x can be approximated by N-R, but if f'(x) (the derivative at the root) is greater than 1 or less than -1, then the recursion will be non-convergent.
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