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F[eq1_] := (1 + \[Beta]\[Alpha]/(r - Subscript[R, H])) A;
F[eq2_] :=  B - (\[Alpha]\[Beta]r*\[Sigma])/((r - Subscript[R, H]) Subscript[R,
     H]) A;
F[eq2_] :=
  B - (\[Alpha]\[Beta]r*\[Sigma])/((r - Subscript[R, H]) Subscript[R,
     H]) A;
½á¹û¾ÍÊÇReplaceAll::reps: {a\[RightArrow]A (1+\[Beta]\[Alpha]/(r+Times[<<2>>]))} is neither a list of replacement rules nor a valid dispatch table, and so cannot be used for replacing. >>2 ab + a^2 f == 0 /.
a \[RightArrow] A (1 + \[Beta]\[Alpha]/(r - Subscript[R, H]))
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walk1997

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jjdg: ½ð±Ò+1, ¸Ðл²ÎÓë 2013-07-22 00:48:02
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2Â¥2013-07-21 21:46:16
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von198698

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by walk1997 at 2013-07-21 21:46:16
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f*a^2 + 2 ab == 0  /.
a \[RightArrow] (1 + \[Beta]\[Alpha]/(r - Subscript[R, H])) AÈ»ºó½á¹û¾ÍÊÇ
ReplaceAll::reps: {a\[RightArrow]A (1+\[Beta]\[Alpha]/(r+Times[<<2>>]))} is neither a list of replacement rules nor a valid dispatch table, and so cannot be used for replacing. >>
2 ab + a^2 f == 0 /.
a \[RightArrow] A (1 + \[Beta]\[Alpha]/(r - Subscript[R, H]))
Õâµ½µ×ÊÇÄÄÓÐÎÊÌâŶ
3Â¥2013-07-22 09:40:07
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von198698

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by walk1997 at 2013-07-21 21:46:16
ÄãÕâ¸öÌùµÄ´úÂ벻ȫ°É£¿ ¾Í3¸ö¶¨Ò壿
±¨¸æÐÅÏ¢ ÓÃÁËÒ»²»ÊÇruleµÄ¶«Î÷À´×ö´ú»»¡£

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4Â¥2013-07-22 09:41:20
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walk1997

½ð³æ (ÖøÃûдÊÖ)

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  (f*a^2 + 2 ab == 0) /.
Rule[a, (1 + \[Beta]\[Alpha]/(r - Subscript[R, H]))]
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RuleµÄ»° Ä㻹ÊÇÓÃ-> ¶ø²»ÒªÓÃÃæ°åÀïÃæµÄ¼ýÍ·
5Â¥2013-07-22 14:47:59
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von198698

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
5Â¥: Originally posted by walk1997 at 2013-07-22 14:47:59
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  (f*a^2 + 2 ab == 0) /.
Rule
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