L'hôpital's Rule
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Using L'Hôpital's rule, lim(x→0) (eˣ - 1)/x equals
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Solution
Incorrect! Answer:
1
- Indeterminate Form Check: As x→0, ex−1→0 and x→0. Form is 0/0.
- Apply L'Hôpital's Rule: Differentiate the numerator and denominator independently.
- Numerator derivative: dxd(ex−1)=ex.
- Denominator derivative: dxd(x)=1.
- New Limit: limx→01ex.
- Final Evaluation: e0/1=1/1=1.
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About This Question
- Subject
- mathematics
- Chapter
- limit, continuity and differentiability
- Topic
- l'hôpital's rule
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
1
- Indeterminate Form Check: As x→0, ex−1→0 and x→0. Form is 0/0.
- Apply L'Hôpital's Rule: Differentiate the numerator and denominator independently.
- Numerator derivative: dxd(ex−1)=ex.
- Denominator derivative: dxd(x)=1.
- New Limit: limx→01ex.
- Final Evaluation: e0/1=1/1=1.
This medium difficulty mathematics question is from the chapter limit, continuity and differentiability, covering the topic of l'hôpital's rule. It appeared in the 2025 exam.
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