MCQ
$\int \frac{x^4+1}{x^2+1} d x=$
  • A
    $\frac{x^3}{3}+c$
  • $\frac{x^3}{3}-x+2 \tan ^{-1} x+c$
  • C
    $2 \tan ^{-1} x+c$
  • D
    $\frac{x^3}{3}+x+2 \tan ^{-1} x+c$

Answer

Correct option: B.
$\frac{x^3}{3}-x+2 \tan ^{-1} x+c$
B

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