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Q.The general solution of (x+y+1)dx+(x+y1)dy=0(x + y + 1)dx + (x + y - 1)dy = 0 is

a
x+y+tan1(x+y)=Cx + y + \tan^{-1}(x + y) = C
b
(x+y)2+2(x+y)=C(x + y)^2 + 2(x + y) = C
c
tan1(x+y)=C\tan^{-1}(x + y) = C
d
x+y=Cx + y = C

Correct Answer: Option A

The correct solution involves applying the fundamental concept to derive the final value step by step...

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