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x^(n+1) = x^(n) - f(x^(n)) / f'(x^(n))

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  • x^(n) ÊÇµÚ n ´Îµü´úµÄ½üËÆÖµ
  • f(x) = x^k – c
  • f'(x) = kx^(k-1)

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  1. Ñ¡ÔñÒ»¸ö³õʼ½üËÆÖµ x^(0)£¬Í¨³£¿ÉÒÔÈ¡ c µÄí§ÒâÒ»¸öÕýʵÊý¡£
  2. µü´úÅÌËã¸üнüËÆÖµ£¬Ö±µ½µÖ´ïËùÐèµÄ¾«¶È¡£
  3. ¹ØÓÚ¸ø¶¨µÄ¾«¶È ¦Å£¬ÈôÊÇ |x^(n+1) – x^(n)|

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  • ³õʼ½üËÆÖµ£ºx^(0) = 3
  • µü´ú£º

    • x^(1) = 3 – (3^3 – 8) / (3 * 3^2) = 2.5714
    • x^(2) = 2.5714 – (2.5714^3 – 8) / (3 * 2.5714^2) = 2.0781
    • x^(3) = 2.0781 – (2.0781^3 – 8) / (3 * 2.0781^2) = 2.0010
  • ×èÖ¹µü´ú£¬ÓÉÓÚ |x^(3) – x^(2)|

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