An arithmetic sequence has the first term and a common difference . The 3rd term is _________.
Answer & Analysis
Analysis
Question Analysis
This question tests the student's ability to use the recursive formula to find a specific term in an arithmetic sequence. The student needs to start from the given term and apply the common difference step by step.
Key Concept Explanation
The recursive formula for an arithmetic sequence allows us to find any term if we know the previous term and the common difference. In this case, we use it to find the 3rd term from the 1st term.
Step-by-step Solution
1. Identify the first term and the common difference .
2. Use the recursive formula ().
3. Find the 2nd term:
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