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Homework Help: Few Quetions need help :P

  1. Mar 14, 2012 #1
    1. Show that between any two real numbers there is a rational number.
    You may assume that for each a>0 and b>0 in R there is a positive integer satisfying b<ma.

    2.Find the intervals on which f(x) = (3x -2)(x 1)(x + 1) is positive, and
    the intervals on which it is negative.

    3.Find a rational number p/q between root of 2 and root of 2 + (1/1000)
    Last edited: Mar 14, 2012
  2. jcsd
  3. Mar 14, 2012 #2


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    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi KelvinMa! Welcome to PF! :wink:

    Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
  4. Mar 14, 2012 #3
    thx tiny-tim : D
    i really dont have any ideas about the first question and the third question
    i ve looked up on my notes and i couldnt find any clues
    the second question i ll find the max and min points but is there any other way to do it?
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