JEE Main | 2014Math miscellaneousMedium
Question
The integral 
is equal to
is equal toOptions
A.
B.
C.
D.
Solution
I = 
As ∫ (xf ′(x) + f (x))dx = xf (x) + c
As ∫ (xf ′(x) + f (x))dx = xf (x) + c
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