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JEE Mains · Maths · STD 12 - 7.1 indefinite integral

उप्युक्त पूणांक \(m\) तथा \(A ( x )\) के लिये \(\int \frac{\sqrt{1-x^{2}}}{x^{4}} d x=A(x)\left(\sqrt{1-x^{2}}\right)^{m}+C\) जहाँ \(C\) एक समाकलन अचर है, तो \(( A ( x ))^{ m }\) बराबर है 

  1. A \(\frac{{ - 1}}{{27\,{x^9}}}\)
  2. B \(\frac{{ - 1}}{{3\,{x^3}}}\)
  3. C \(\frac{{  1}}{{27\,{x^6}}}\)
  4. D \(\frac{{  1}}{{9\,{x^4}}}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{{ - 1}}{{27\,{x^9}}}\)

Step-by-step Solution

Detailed explanation

\(\int \frac{\sqrt{1-x^{2}}}{x^{4}} d x=\int \frac{x \sqrt{\frac{1}{x^{2}}-1}}{x^{4}} d x=\int \frac{1}{x^{3}} \sqrt{\frac{1}{x^{2}}-1} d x\) \({\rm{ Let }}\frac{1}{{{x^2}}} - 1 = t\) \( - \frac{2}{{{x^3}}}{\rm{d}}x = {\rm{dt}}\)…
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