Error Analysis in Limit Evaluation
When evaluating the limit , a student incorrectly concludes that the limit is infinity. What was the likely error in the student’s procedure?
A
They incorrectly canceled the square root term without rationalizing the numerator, which is necessary to properly evaluate the limit.
B
They substituted prematurely.
C
They made a mistake in computing the value of the square root at 9.
D
They should have applied L’Hôpital’s rule, which would yield a finite limit.
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