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D Y D X = 1 − Cos X 1 + Cos X

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प्रश्न

\[\frac{dy}{dx} = \frac{1 - \cos x}{1 + \cos x}\]
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उत्तर

We have, 
\[\frac{dy}{dx} = \frac{1 - \cos x}{1 + \cos x}\]
\[ \Rightarrow \frac{dy}{dx} = \frac{2 \sin^2 \frac{x}{2}}{2 \cos^2 \frac{x}{2}}\]
\[ \Rightarrow \frac{dy}{dx} = \tan^2 \frac{x}{2}\]
\[ \Rightarrow dy = \left( \tan^2 \frac{x}{2} \right)dx\]
Integrating both sides, we get
\[\int dy = \int\left( \tan^2 \frac{x}{2} \right)dx\]
\[ \Rightarrow \int dy = \int\left( \sec^2 \frac{x}{2} - 1 \right)dx\]
\[ \Rightarrow y = 2 \tan \frac{x}{2} - x + C\]
\[\text{ So, } y = 2 \tan \frac{x}{2} - x + \text{ C is defined for all }x \in R . \]
\[\text{ Hence, }y = 2 \tan \frac{x}{2} - x +\text{ C, where }x \in R, \text{ is the solution to the given differential equation } .\]

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अध्याय 21: Differential Equations - Exercise 22.05 [पृष्ठ ३४]

APPEARS IN

आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 12
अध्याय 21 Differential Equations
Exercise 22.05 | Q 5 | पृष्ठ ३४

वीडियो ट्यूटोरियलVIEW ALL [2]

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