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

ધારોકે \(y=y(x)\) એ વિકલ સમીકરણ \(\left(1+y^2\right) e^{\tan x} d x+\cos ^2 x\left(1+e^{2 \tan x}\right) d y=0, y(0)=1\). નો ઉકેલ છે. તો \(y\left(\frac{\pi}{4}\right)\) \(=\) .........

  1. A  \(\frac{2}{\mathrm{e}}\)
  2. B  \(\frac{1}{\mathrm{e}^2}\)
  3. C  \(\frac{1}{\mathrm{e}}\)
  4. D \(\frac{2}{\mathrm{e}^2}\)
Verified Solution

Answer & Solution

Correct Answer

(C)  \(\frac{1}{\mathrm{e}}\)

Step-by-step Solution

Detailed explanation

\( \left(1+y^2\right) e^{\tan x} d x+\cos ^2 x\left(1+e^{2 \tan x}\right) d y=0 \) \( \int \frac{\sec ^2 x e^{\tan x}}{1+e^{2 \tan x}} d x+\int \frac{d y}{1+y^2}=C \) \( \Rightarrow \tan ^{-1}\left(e^{\tan x}\right)+\tan ^{-1} y=C \)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app