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Differential Equations
NCERT Exemplar Class 12
CBSE
Grade 12
Question:
Solve $e^x \tan y dx + (1 - e^x) \sec^2 y dy = 0$.
Step-by-Step Solution
Given: Problem statement: Solve $e^x \tan y dx + (1 - e^x) \sec^2 y dy = 0$. Step 1: Apply core formula / set up system: Write key governing equation or formula. [1.0 Mark] Step 2: Evaluate final result / solve for unknown: Obtain final simplified value or vector. [1.0 Mark] Conclusion: Result verified.
--- 🎯 Official CBSE Marking Scheme: Setting up equation / formula: 1.0 Mark Evaluating correct final answer: 1.0 Mark
Correct Answer:
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