Page 2 of 2 FirstFirst 12
Results 16 to 19 of 19

Math Help - MemberShip Tables

  1. #16
    Junior Member
    Joined
    Apr 2010
    Posts
    59
    How did you do that, I really don't see where the -10, 13 and 15 came from unless im being really stupid :|
    Follow Math Help Forum on Facebook and Google+

  2. #17
    MHF Contributor undefined's Avatar
    Joined
    Mar 2010
    From
    Chicago
    Posts
    2,340
    Awards
    1
    Quote Originally Posted by ramdrop View Post
    How did you do that, I really don't see where the -10, 13 and 15 came from unless im being really stupid :|
    That was a hypothetical example; I meant for you to use it as a model to solve the actual problem. It was so that I could show you how to do it without actually solving the problem for you.
    Follow Math Help Forum on Facebook and Google+

  3. #18
    Junior Member
    Joined
    Apr 2010
    Posts
    59
    Oh right okay, well I solved it to have:

    -4 \le x \le 7

    Seeing as -4 is impossible the smallest value must be 0 and the maxium, 7
    Follow Math Help Forum on Facebook and Google+

  4. #19
    MHF Contributor undefined's Avatar
    Joined
    Mar 2010
    From
    Chicago
    Posts
    2,340
    Awards
    1
    Quote Originally Posted by ramdrop View Post
    Oh right okay, well I solved it to have:

    -4 \le x \le 7

    Seeing as -4 is impossible the smallest value must be 0 and the maxium, 7
    You seem to have kept the loosest bounds and discarded the strictest.

    \displaystyle x \ge 0

    7-x \ge 0 \implies x \le 7

    6-x \ge 0 \implies x \le 6

    4+x \ge 0 \implies x \ge -4

    Discarding the second and fourth, I get 0 \le x \le 6 .

    IMPORTANT: x is not the value you seek to find the min and max of. You want to find min and max of "the number of male patients under 50 without a back problem" which is 7-x. So...
    Last edited by undefined; July 17th 2010 at 11:42 PM.
    Follow Math Help Forum on Facebook and Google+

Page 2 of 2 FirstFirst 12

Similar Math Help Forum Discussions

  1. difference between membership and subset operators
    Posted in the Discrete Math Forum
    Replies: 3
    Last Post: December 6th 2011, 11:44 PM
  2. The subgroup membership problem for F_2 x F_2
    Posted in the Higher Math Forum
    Replies: 2
    Last Post: May 18th 2011, 12:49 AM
  3. dendrogram about a known membership
    Posted in the Math Software Forum
    Replies: 0
    Last Post: August 13th 2009, 10:32 AM
  4. Replies: 1
    Last Post: October 13th 2008, 05:14 PM

Search Tags


/mathhelpforum @mathhelpforum