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

Answer

Correct option: D.
$-x+2 \tan ^{-1} x+C$
D

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