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MHT CET · Maths · Indefinite Integration

\(\int \frac{x}{\sqrt{1-2 x^4}} \mathrm{~d} x=\) (Where \(C\) is a constant of integration)

  1. A \(\frac{1}{2 \sqrt{2}} \sin ^{-1}\left(\sqrt{2} x^2\right)+C\)
  2. B \(\frac{1}{2 \sqrt{2}} \sin ^{-1}\left(2 \sqrt{2} x^2\right)+C\)
  3. C \(\frac{1}{2} \sin ^{-1}(2 x)+C\)
  4. D \(\frac{1}{\sqrt{2}} \sin ^{-1}(\sqrt{2} x)+C\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{1}{2 \sqrt{2}} \sin ^{-1}\left(\sqrt{2} x^2\right)+C\)

Step-by-step Solution

Detailed explanation

\(\int \frac{x}{\sqrt{1-2 x^4}} \mathrm{~d} x=\frac{1}{2 \sqrt{2}} \int \frac{2 \sqrt{2} x \mathrm{~d} x}{\sqrt{1-\left(\sqrt{2} x^2\right)^2}}=\frac{1}{2 \sqrt{2}} \sin ^{-1}\left(\sqrt{2} x^2\right)\)