Chapter 2 "Number Sequence" ppt review-five required courseware

The second edition of the compulsory edition of the Soviet version of the second chapter "Sequences" ppt review 2. Definitions, uses and issues to be paid attention to when using arithmetic sequences: 3. What is the general term formula for arithmetic sequences? What are the characteristics of the structure? 5. What method is used to deduce the first n terms and formulas of the arithmetic sequence? The content of the formula? Issues to be noted when using? What are the characteristics of the structure of the first n terms and formulas?

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