cac huynh jup minh voi : cho y= (x+ :sqrt{ x^{2}+1 } ^{3} CM:( x^{2} +1)y"+xy'-9y=0
dao ham hay jup minh voi
Started By vutuanh94, 30-03-2011 - 18:17
#1
Posted 30-03-2011 - 18:17
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