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haiyanliu(½ð±Ò+10): 2010-11-17 09:17:48
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haiyanliu

½ð³æ (ÕýʽдÊÖ)


ÒýÓûØÌû:
Originally posted by gd88 at 2010-11-17 03:36:59:
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gd88

½ð³æ (СÓÐÃûÆø)


haiyanliu(½ð±Ò+10): 2010-11-17 14:24:14
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haiyanliu

½ð³æ (ÕýʽдÊÖ)


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Originally posted by gd88 at 2010-11-17 13:06:26:
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haiyanliu

½ð³æ (ÕýʽдÊÖ)


ÒýÓûØÌû:
Originally posted by haiyanliu at 2010-11-17 09:19:39:

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gsview

ľ³æ (СÓÐÃûÆø)


haiyanliu(½ð±Ò+4): 2010-11-17 15:38:20
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haiyanliu

½ð³æ (ÕýʽдÊÖ)


ÒýÓûØÌû:
Originally posted by gsview at 2010-11-17 15:04:18:
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yanxingsun

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gsview

ľ³æ (СÓÐÃûÆø)


haiyanliu(½ð±Ò+10):лл£¬×Ô¼º½â¾öÀ² 2010-11-19 10:18:23
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y = 1 + 2/a^2 - 3/a*Coth[a];
z = Coth[a] + 6/a*Coth[a] + 3/a + 6/a^3;
ParametricPlot[{y, z}, {a, 1, 10}, Frame -> True, Axes -> False,
  PlotRange -> All]


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y = 1 + 2/a^2 - 3/a*b;
z = b + 6/a*b + 3/a + 6/a^3;

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Solve[{y == 1 + 2/a^2 - 3/a*b,
      z == b + 6/a*b + 3/a + 6/a^3}, {a, b}] // Simplify

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13Â¥2010-11-18 13:29:20
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gd88

½ð³æ (СÓÐÃûÆø)


haiyanliu(½ð±Ò+10):лл£¬×Ô¼º½â¾öÀ² 2010-11-19 10:18:42
haiyanliu(½ð±Ò+8): 2010-11-19 10:19:26
haiyanliu(½ð±Ò+8): 2010-11-19 10:19:51
ÒýÓûØÌû:
Originally posted by gsview at 2010-11-18 13:29:20:
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coth[a]=b£¬È»ºóÄã¸øµÄÁ½¸öʽ×Ӿͻá±ä³É

y = 1 + 2/a^2 - 3/a*b;
z = b + 6/a*b + 3/a + 6/a^3;

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[ Last edited by gd88 on 2010-11-19 at 02:27 ]
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haiyanliu

½ð³æ (ÕýʽдÊÖ)


resonant:½â¾ö·½°¸Ìù³öÀ´¿ÉÒÔÆÀ·Ö¡£¸÷λ°æÓÑÒ²ÊÇÅãÅóÓÑÄãһͬŬÁ¦ºÍ¶¯¹ýÄÔ½îµÄ£¬ºÎ²»·ÖÏíһϣ¿ 2010-11-22 09:28:16
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Originally posted by gd88 at 2010-11-22 02:20:32:
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