CBSE Class 12 Mathematics 2026 Main Paper 65(B) · Q51 Marksmonotonicity
CBSE Class 12 Mathematics 2026 Main Paper 65(B) · Question 5 (Applications Of Derivatives)
Which listed interval has increasing x³e⁻³ˣ?
✅ Step-by-Step Solution
Final Answer: (0,1)
- The derivative is 3x²e⁻³ˣ(1−x), positive on (0,1). It is also positive for x<0, outside the listed options.
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