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Fanduekisses

  • one year ago

Is this still considered a correct answer?

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  1. Fanduekisses
    • one year ago
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    I was supposed to write an expression for the apparent nth term of the sequence (assume n begins with 1) : 1, -1, 1, -1, 1

  2. Fanduekisses
    • one year ago
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    I came up with \[a_{n}=\frac{ (-1)^n }{ -1 }\]

  3. Fanduekisses
    • one year ago
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    but the answer key says it's\[a_{n}= (-1)^{n+1}\]

  4. Vocaloid
    • one year ago
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    both should yield the same result

  5. Vocaloid
    • one year ago
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    essentially, the difference between your answer and the textbook answer is that yours divides each consecutive term by -1 and the other answer multiplies each consecutive term by -1, which produces the same sequence an = (-1)^(n+1) = (-1)^n * (-1)^1, using our exponent rules

  6. Fanduekisses
    • one year ago
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    ^_^ thanks!

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