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If a linear sequence has (a_4=18) and (a_9=43), what is (a_n)?
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Answer and explanation
Correct answer: (5n-2)
The increase over (5) positions is (25), so the common difference is (5). Then (a_4=18) gives the constant term (-2).
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What is the correct answer to this question?
(5n-2)
Why is this the correct answer?
The increase over (5) positions is (25), so the common difference is (5). Then (a_4=18) gives the constant term (-2).
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: nth term.
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