\int \frac{x^2+1}{x^4+1} \dx

Correct Answer is : 1√2tan−1(x2−1x√2)+c

{1}/{\sqrt{2}} \log _e (x^2+1) +c

{1}/{\sqrt{2}} \tan ^{-1} ( {x^2+1}/{x \sqrt{2}}) +c

{1}/{\sqrt{2}} \tan ^{-1} (x^2-1) +c

{1}/{\sqrt{2}} \tan ^{-1} ( {x^2-1}/{x \sqrt{2}}) +c

COMEDK Exam 2018 Solved Paper

Question : 172 of 180

Marks: +1, -0

∫‌

x2+1

x4+1

‌dx

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