CBSE Class 12 Mathematics 2026 Main Paper 65/3/2 · Q31 Markssubstitution
CBSE Class 12 Mathematics 2026 Main Paper 65/3/2 · Question 3 (Integrals)
Evaluate \(\int dx/\sqrt{e^{-2x}-1}\).
✅ Step-by-Step Solution
Final Answer: arcsin(eˣ)+C
- For x<0, multiply numerator and denominator by eˣ and use u=eˣ. The resulting integral is ∫du/√(1−u²).
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