WBJEE 2017 Math Solved Paper

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Question : 23 of 75

Marks: +1, -0

∫

x2−1

x4+3x2+1

‌dx (x > 0) is

tan−1(x+
1
x
)+c
tan−1(x−
1
x
)+c
loge(
x+
1
x
−1
x+
1
x
+1
)+c
loge(
x−
1
x
−1
x−
1
x
+1
)+c

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