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Math Help - Sequences

  1. #1
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    Sequences

    A sequence is increasing if an < an+1 and decreasing if an > an+1 is what i believe is correct, if not please correct me

    With this problem an = 1/(2n+3) , (n is a subscript on the left and not the right.)

    I checked it by doing:


    1/(2n+3) 1/(2(n+1)+2)
    1/(2n+3) < 1/(2n+5)

    In this shouldn't this be a increasing? But the answer is indeed decreasing? Am i missing something? Thanks in advance for your help.
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  2. #2
    MHF Contributor Calculus26's Avatar
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    1/(2n+3)>1/(2n+5) smaller denominator bigger fraction
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