Results 1 to 3 of 3

Math Help - Subset tst

  1. #1
    Newbie
    Joined
    Dec 2007
    Posts
    2

    Subset tst

    I am very confused with the subset tests an i have these three questions that i cannot do
    can someone help me out please.
    i need to show if w is a subspace of v or not.

    1) V
    = M2,2(R) and W = {A 2 V | AT = A}.
    2) V = R3 and W = {(x1, x2, x3) 2 V | 3x1 + x2 x3 = 1}.
    3) V = P2(R), real polynomial functions of degree at most 2, and W= {f 2 V| f(2) = 0}.



    or send me a link from wher ei can get a better understanding of subset. cheers
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Global Moderator

    Joined
    Nov 2005
    From
    New York City
    Posts
    10,616
    Thanks
    9
    Did you check whether the subset is closed under vector addition and scalar multiplication?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Dec 2007
    Posts
    2
    i am pretty sure it is under additional vector.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Proof that if A is a subset of P(A), P(A) is a subset of P(P(A))
    Posted in the Discrete Math Forum
    Replies: 12
    Last Post: May 23rd 2011, 04:26 PM
  2. subset
    Posted in the Differential Geometry Forum
    Replies: 1
    Last Post: February 4th 2011, 01:14 PM
  3. Proof on Openness of a Subset and a Function of This Subset
    Posted in the Differential Geometry Forum
    Replies: 3
    Last Post: October 24th 2010, 09:04 PM
  4. subset U subset is NOT subspace of Superset?
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: September 20th 2009, 04:17 PM
  5. Subset
    Posted in the Algebra Forum
    Replies: 4
    Last Post: January 22nd 2009, 11:12 AM

Search Tags


/mathhelpforum @mathhelpforum