Evaluate .
Answer and explanation
Correct answer: D.
- Step 1: Divide the numerator and denominator by .
- Step 2: The terms in and vanish, so the limit is .
Answer
.
Why not the others: is what you get if you invert the ratio. is what you get if you think the limit is . is what you get if you ignore the denominator coefficient.
Practise more Pure Maths: Differentiation, Integration and Limits.
Free questions with an explanation for every one, and full timed GCE Advanced Level (Sri Lanka) mock tests.