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

Answer

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

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