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JEE Mains · Maths · STD 12 - 7.1 indefinite integral

For real numbers \(\alpha, \beta, \gamma\) and \(\delta,\) if  \(\int \frac{\left(x^{2}-1\right)+\tan ^{-1}\left(\frac{x^{2}+1}{x}\right)}{\left(x^{4}+3 x^{2}+1\right) \tan ^{-1}\left(\frac{x^{2}+1}{x}\right)} d x\)  \(=\alpha \log _{e}\left(\tan ^{-1}\left(\frac{x^{2}+1}{x}\right)\right)\) \(+\beta \tan ^{-1}\left(\frac{\gamma\left(x^{2}-1\right)}{x}\right)+\delta \tan ^{-1}\left(\frac{x^{2}+1}{x}\right)+C\)  where \(C\) is an arbitrary constant, then the value of \(10(\alpha+\beta \gamma+\delta)\) is equal to ....... .

  1. A \(6\)
  2. B \(4\)
  3. C \(9\)
  4. D \(2\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(6\)

Step-by-step Solution

Detailed explanation

\(\int \frac{\left(x^{2}-1\right) d x}{\left(x^{4}+3 x^{2}+1\right) \tan ^{-1}\left(x+\frac{1}{x}\right)}+\int \frac{d x}{x^{4}+3 x^{2}+1}\)…