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theanonymous27

  • 3 years ago

If the nth partial sum of a sequence an is given by S_n = (3n+5)/(n+3) , what is A_n when n >= 2

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  1. manishsatywali
    • 3 years ago
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    you knw the relation : a(n) = s(n)-s(n-1) use this formula

  2. manishsatywali
    • 3 years ago
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    |dw:1359440364069:dw|

  3. theanonymous27
    • 3 years ago
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    I got this as the ans > (3n+4)/[(n+3)(n+2)] .. but my answer choices only have 4 or 14 on the top

  4. theanonymous27
    • 3 years ago
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    my bad! the answer is 4/[(n+3)(n+2)]

  5. theanonymous27
    • 3 years ago
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    thanks a lot!!!!!!!

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