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Editor
 Sep 18, 2022
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$\int \tan^{-1}x dx$ is equal to:
Difficulty: Easy
A: 
$\frac{tan^{-1}x}{x}+ln\sqrt{1+x^{2}}$
B: 
$\frac{tan^{-1}x}{x}-ln\sqrt{1+x^{2}}$
C: 
$x\tan^{-1}x+ln\sqrt{1+x^{2}}$
D: 
$x\tan^{-1}x+\frac{1}{ln(1+x^{2})}.2$
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NETNUST Entry TestMathematicsIntegration