The uploaded document appears to be a tutorial or guide related to limits and continuity in mathematics. If you want me to extract answers to specific questions from this document, please let me know which ones you need assistance with, or provide context for the specific problems.

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1. Solve specific problems listed in the document?
2. Provide explanations for certain concepts (e.g., limits, continuity)?
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Tip: When studying limits, always ensure you understand the basic principles of left-hand and right-hand limits for better clarity.