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What is the (n)th term of the sequence (-1,2,-3,4,-5,\ldots)?
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Answer and explanation
Correct answer: ((-1)^n n)
For odd (n), terms are negative and for even (n), terms are positive, so (a_n=(-1)^n n). Check the sign pattern separately.
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What is the correct answer to this question?
((-1)^n n)
Why is this the correct answer?
For odd (n), terms are negative and for even (n), terms are positive, so (a_n=(-1)^n n). Check the sign pattern separately.
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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