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  1. ½ç˵º¯ÊýºÍµ¼Êý£º½ç˵ҪÇó½âµÄº¯Êý f(x) ºÍËüµÄµ¼Êý f'(x)¡£
  2. ÉèÖóõʼÍƲâÖµ£ºÑ¡ÔñÒ»¸ö³õʼֵ x0 ×÷Ϊ½âµÄÔ¤¼ÆÖµ¡£
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    x(i+1) = x(i) - f(x(i)) / f'(x(i))

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  4. ¼ì²éÊÕÁ²£º¼ì²éµü´úÖµÊÇ·ñÊÕÁ²ÓÚ׼ȷ½â¡£ÈôÊÇ |x(i+1) – x(i)|
  5. ·µ»ØЧ¹û£º·µ»Øµü´ú»ñµÃµÄ½üËƽâ¡£

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Çó½â·½³Ì f(x) = x^3 – 2x + 2 = 0 µÄVB³ÌÐòʾÀý£º

' ½ç˵º¯ÊýºÍµ¼Êý
Function f(x As Double) As Double
    Return x ^ 3 - 2 * x + 2
End Function

Function fPrime(x As Double) As Double
    Return 3 * x ^ 2 - 2
End Function

' ÉèÖóõʼÍƲâÖµ
Dim x0 As Double = 1

' µü´úÀú³Ì
Dim x = x0
Do
    x = x - f(x) / fPrime(x)
    ' ¼ì²éÊÕÁ²
    If Abs(x - x0) <p><strong>¿¢ÊÂÓï</strong></p><p>Å£¶Ùµü´ú·¨ÊÇÒ»ÖÖ¹¦Ð§Ç¿Ê¢µÄÊýÖµÒªÁì£¬¿ÉÓÃÓÚ½â¾öÆÕ±éµÄ·½³ÌºÍÓÅ»¯ÎÊÌâ¡£VB³ÌÐòÖпÉÒÔÇáËÉʵÏÖ¸ÃÒªÁì£¬ÎªÊýѧºÍ¿ÆѧÅÌËãÌṩÁËÒ»ÖÖÓÐÓõŤ¾ß¡£</p>

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