WBJEE 2020 Math Solved Paper

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Question : 64 of 75

Marks: +1, -0

Let y=

1

1+x+ln‌x

, then

d
dy
dx
+y=x
x
dy
dx
=y(y‌ln‌x−1)
x2
dy
dx
=y2+1−x2
x(
dy
dx
)2=y−x

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