UPSC NDA 2 2012 Mathematics Paper

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Question : 81 of 120

Marks: +1, -0

What is ∫‌

ln‌x

x

‌dx equal to?

‌
(ln‌x)2
2
+c
‌
(ln‌x)
2
+c
(ln‌x)2+c
None of the above
where c is the constant of integration.

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