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The order of the differential equation (...

The order of the differential equation `(dx)/x +(dy)/y = 0` is

A

log x. log y=c

B

x+y=c

C

`1/y+1/x=c `

D

xy=c

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The correct Answer is:
D
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TARGET PUBLICATION-DIFFERENTIAL EQUATIONS -COMPETITIVE THINKING
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  12. The particular solution of the differential equation xdy + 2 y dx = ...

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