KEAM 2019 Math Paper

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Question : 11 of 121

Marks: +1, -0

∫cos{2tan−1√‌

1−x

1+x

}‌d‌x is equal to

‌
1
2
x2+k
‌
1
2
x+k
‌
1
4
(x2+1)+k
x2+k
None of these

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