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¿ÒÇë¸ßÊÖÖ¸½Ì£º ¸÷λ´óÏÀ£ºÐ¡µÜ±àдÁËÒ»¸öÅ£¶Ùµü´úµÄVB´úÂ룬µ«·¢ÏÖ½á¹û¶¼³öÏÖÔÚexcelµÄµÚÒ»ÁУ¬ÄÜ·ñÇë´óÏÀÖ¸½Ìһϣ¬ÈçºÎÈüÆËã½á¹û³öÏÖÔÚ²»Í¬µÄÁУ¿Ð»Ð»£¡´úÂëÈçÏ£º Private Sub Command1_Click() Open "C:\Users\aoiw\Desktop\12.xls" For Output As #1 Dim xb As Double, x As Single, x1 As Single Dim f As Single, f1 As Single For xb = 0.04 To 0.201 Step 0.001 x = 0 Do x1 = x f = (32 * xb + 8) * x ^ 3 - (216 * xb + 34) * x ^ 2 + (432 * xb + 28) * x - 250 * xb f1 = (96 * xb + 24) * x ^ 2 - (432 * xb + 68) * x + 432 * xb + 28 x = x1 - f / f1 Loop Until (Abs(x - x1) < 0.00001) a = 1 / (x - xb) a = Round(a, 4) Print #1, xb; a Next xb Close #1 End Sub [ Last edited by wangen994 on 2010-5-6 at 13:02 ] |
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