alleryThe two one sided limits of a function are compared to test:
APeriodicity
BExistence
CContinuity
DSymmetry
Answer & Solution
Correct answer: B. Existence
1. A limit exists only when both sides agree.
2. So the two one sided values are worked out and compared.
3. That comparison tests whether the limit exists.
_Source: syllabus Mathematics, Chapter 13, Limits and Derivatives._
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