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

આપેલ વિકલ સમીકરણ \(\left(\mathrm{e}^y+1\right) \cos x \mathrm{~d} x+\mathrm{e}^y \sin x \mathrm{~d} y=0\) નો ઉકલ \(y(x)\) ને બિંદૂ \(\left(\frac{\pi}{2}, 0\right)\) માંથી પસાર થાય, તો \(\mathrm{e}^{y\left(\frac{\pi}{6}\right)}=\) .............

  1. A \(8\)
  2. B \(3\)
  3. C \(7\)
  4. D \(33\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(3\)

Step-by-step Solution

Detailed explanation

\( \left(e^y+1\right) \cos x d x+e^y \sin x d y=0 \) \( \Rightarrow d\left(\left(e^y+1\right) \sin x\right)=0 \) \( \left(e^y+1\right) \sin x=C\) It passes through \(\left(\frac{\pi}{2}, 0\right)\) \(\Rightarrow \mathrm{c}=2\) Now, \(x=\frac{\pi}{6}\)…
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