NDA Math Indefinite Integrals

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Question : 33 of 38

Marks: +1, -0

What is ∫

dx

√x2+a2

equal to ?
where c is the constant of integration.

[NDA I 2015]

ln|
x+√x2+a2
a
|+c
ln|
x−√x2+a2
a
|+c
ln|
x2+√x2+a2
a
|+c
None of the above

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