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ÏÂÃæÕâ¸ö´úÂëÓ¦¸Ã¿ÉÒÔÖ±½Ócopy¹ýÈ¥ÔËÐÐ ÎÒÓÃmathematica8.04 µÚÒ»Ðеĺ¯Êý¿ÉÒÔ¸Ä³ÉÆäËû¶àÏîʽ -------------------- f[x_] := x^7 + 2 t1 = x /. Solve[f[x] == 0, x]; t1 = DeleteCases[t1, x_ /; Element[x, Reals]]; t2 = x /. Solve[f[x] == 0, x, Reals]; eq1 := {ComplexExpand[Im[t1[]^2 - a*t1[] + b]] == 0}; r1 = Table[Solve[eq1, a], {i, 1, Length[t1]}] // Flatten; r1 = DeleteDuplicates[r1]; eq2 := {ComplexExpand[Re[t1[]^2 - a*t1[] + b]] == 0}; r2 = Table[Solve[eq2, b], {i, 1, Length[t1]}] // Flatten; r2 = DeleteDuplicates[r2]; r3 = Table[{r1[], r2[] /. r1[]}, {i, 1, Length[r1]}]; ff1 = Table[temp1 = x^2 - a*x + b /. r3[] // Expand; Print[temp1]; temp1, {i, 1, Length[r3]}]; ff2 = Table[temp1 = x - t2[]; Print[temp1]; temp1, {i, 1, Length[t2]}]; ff = Join[ff1, ff2]; N[Apply[Times, ff], 20] |
10Â¥2012-12-16 10:52:12
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2Â¥2012-12-11 11:25:31
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3Â¥2012-12-11 17:55:38
situxuming
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4Â¥2012-12-11 17:57:38













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