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3Â¥: Originally posted by peterflyer at 2014-11-30 17:56:19
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feixiaolin: ½ð±Ò+5 2014-11-30 07:46:41
y=b M^a£¬ dy/dM =b a M^(a-1) /=a
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2Â¥2014-11-30 01:40:15
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Èç¹ûy=b*M^a,
Ôò  dy/dM=b*a*M^(a-1)=a*y/M
Èôa=dy/dMΪ³£Êý£¬Ôò
y=a*M+C
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