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!

Simplify as one expression

  1. Mar 12, 2005 #1
    I need some help

    I got an expression involving series...

    x - (2/6)x^3 - (20/120)x^5 - (1080/5040)x^7 - (140400/362880)x^9 - ...

    I remove x from my summation expression.. but

    Right now, I can express as a summation from n = 1 to infinity of

    (??) x^(2n + 1) / (2n + 1)!

    That is.. what is my pattern in this: 2, 20, 1080, 140400,... ?
  2. jcsd
  3. Mar 13, 2005 #2
    Am I correct to say that you want to find the general term to express it as one summation?
  4. Mar 13, 2005 #3
    Yes. That is what I want to know... thank you for your clarification
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Simplify as one expression
  1. Simplify a expression (Replies: 8)