An arithmetic sequence has the 4th term and the common difference . The 7th 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 7th term from the 4th term.
Step-by-step Solution
1. Identify the 4th term and the common difference .
2. Use the recursive formula ().
3. Find the 5th term:
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