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JEE Mains · Maths · STD 12 - 9. differential equations

माना अवकल समीकरण  \(\left(1-x^2\right) d y=\left(x y+\left(x^3+2\right) \sqrt{1-x^2}\right) d x,-1 < x < 1\) का हल \(v\) है तथा \(y (0)=0\) है यदि \(\int_{-\frac{1}{2}}^{\frac{1}{2}} \sqrt{1-x^2} y ( x ) dx = k \text { है, तो } k ^{-1}\) है।

  1. A \(320\)
  2. B \(321\)
  3. C \(322\)
  4. D \(323\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(322\)

Step-by-step Solution

Detailed explanation

\(\left(1-x^{2}\right) \frac{d y}{d x}=x y+\left(x^{3}+2\right) \sqrt{1-x^{2}}\) \(\Rightarrow \frac{d y}{d x}+\left(\frac{-x}{1-x^{2}}\right) y=\frac{x^{3}+2}{\sqrt{1-x^{2}}}\) \(I F=e^{\int \frac{-x}{1-x^{2}} d x}=\sqrt{1-x^{2}}\)…
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