Results 1 to 2 of 2

Thread: A simple proof...

  1. November 6th 2009, 03:43 PM #1
    Aremonus
    Aremonus is offline
    Newbie
    Joined
    Nov 2009
    Posts
    1

    A simple proof...

    I need to proof that (n+1)^n >= 2*n^n

    it's emberassing, but I just don't see how
    Follow Math Help Forum on Facebook and Google+
  2. November 6th 2009, 04:15 PM #2
    I-Think
    I-Think is offline
    Senior Member I-Think's Avatar
    Joined
    Apr 2009
    Posts
    286
    (n+1)^n\geq2n^n

    Use induction
    Test n=1
    It is true.

    Assume true for n=k
    (k+1)^k\geq2k^k

    Test n=k+1

    You should arrive at the answer.
    Reply if you're still having trouble.
    Follow Math Help Forum on Facebook and Google+
« Max/Min/Saddle Points of an Equation | Integration/ Differentiation »

Similar Math Help Forum Discussions

  1. Help with a simple Sin proof
    Posted in the Trigonometry Forum
    Replies: 11
    Last Post: November 22nd 2010, 05:24 AM
  2. Simple proof
    Posted in the Statistics Forum
    Replies: 0
    Last Post: January 31st 2010, 04:17 PM
  3. Help with a simple proof
    Posted in the Calculus Forum
    Replies: 0
    Last Post: November 29th 2009, 11:43 AM
  4. simple proof
    Posted in the Number Theory Forum
    Replies: 1
    Last Post: February 17th 2008, 04:15 PM
  5. 'simple' proof
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: December 7th 2007, 11:46 AM

Search Tags


/mathhelpforum @mathhelpforum