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微分方程dy/dx-y/x=tan(y/x)的通解是(  )。[2011年真题]

发布日期:2021-03-18

微分方程dy/dx-y/x=tan(y/x)的通解是(  )。[2011年真题]
A

sin(y/x)=Cx

B

cos(y/x)=Cx

C

sin(y/x)=x+C

D

Cxsin(y/x)=1

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