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!

Question regarding trinomial expansion

  1. Apr 12, 2013 #1
    The co-efficient of t2 in the expansion of given equation is : (t<<1)



    (1 - 2tw + t2)-1/2



    I have never expanded trinomials with negative exponents. In the absence of w, it could be expanded with binomial theorem but with w I don't understand how to solve it.
     
  2. jcsd
  3. Apr 12, 2013 #2

    Ray Vickson

    User Avatar
    Science Advisor
    Homework Helper

    I don't see anything with an '=' sign in it, so I don't see an equation. However, I do see an *expression*.


    Anyway, do you know how to find the coefficients of ##x^0 = 1##, ##x^1## and ##x^2## in the expansion of ##f(x) = (1 - x)^{-1/2}?## If so, just set ##x = 2wt - t^2.##
     
  4. Apr 12, 2013 #3
    Yeah *expression* instead of equation and thanks for the tip.
     
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: Question regarding trinomial expansion
  1. Expansion Question (Replies: 10)

  2. Factoring Trinomials (Replies: 2)

Loading...