
高数微分,谢谢
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xy'=ylny
=>dy/(ylny)=dx/x
=>d(lny)/lny=lnx+lnC'
=>ln(lny)=ln(C'x)
=>lny=C'x
=>y=Ce^x (C=e^C')
=>dy/(ylny)=dx/x
=>d(lny)/lny=lnx+lnC'
=>ln(lny)=ln(C'x)
=>lny=C'x
=>y=Ce^x (C=e^C')
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