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Question

The integrating factor of the differential equation dydx=1x+y+2 is

A
ex+y+2
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B
ey
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C
ey
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D
log|x+y+2|
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Solution

The correct option is C ey
dydx=1x+y+2
x+y+2=dxdy
dxdyx=y+2
Hence, the integrating factor,
I.F. =edy=ey

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