1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Series and sequences Problem! Help please.

  1. Feb 22, 2015 #1
    1. The problem statement, all variables and given/known data
    Well im stuck with this math problem and i was wondering if you could help me:
    https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/10997707_10200231195780272_1526570237911134602_n.jpg?oh=8d10e10d9c41470b751c36f4330864f1&oe=557F93B0&__gda__=1434457045_a894f47029b86afda4081e42d0282078
    I already solved a), but i stuck with b)




    2. The attempt at a solution
    This is the solution i came up with for a)
    https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/14059_10200231203980477_4182850412301272757_n.jpg?oh=6182f6ae981b50b7a0642552a1f53f57&oe=554DBAB5&__gda__=1434983726_505d6a8220d0e1cc493cbdeffc88483e


    Thanks in advance
     
  2. jcsd
  3. Feb 22, 2015 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    Maybe I don't see the problem. But if ##r_n## is increasing up to a limit ##L<1##, then isn't ##\frac{1}{1-r_n} \le \frac{1}{1-L}##?
     
  4. Feb 22, 2015 #3
    That might be it, budd. Thanks. But i'd like to hear more suggestions, just in case.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Series and sequences Problem! Help please.
Loading...