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In an arithmetic sequence, (a_3=12) and (a_7=28). What is its general term?
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Answer and explanation
Correct answer: (a_n=4n)
(a_7-a_3=16) and there are four gaps, so (d=4), then (a_n=4n). From two given terms first find the common difference.
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What is the correct answer to this question?
(a_n=4n)
Why is this the correct answer?
(a_7-a_3=16) and there are four gaps, so (d=4), then (a_n=4n). From two given terms first find the common difference.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Explicit or general rule.
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