Results 1 to 3 of 3

Math Help - Determining the zeros of x^4 -(x^3) -(31x^x) + x 30. EASY PRECAL PROBLEM

  1. #1
    Newbie
    Joined
    Sep 2012
    From
    United States
    Posts
    12

    Determining the zeros of x^4 -(x^3) -(31x^x) + x 30. EASY PRECAL PROBLEM

    Correct answer is 1, -1, -5, and 6. SOLVE IT THE SAME WAY AS A PRECAL WOULD -.i.e. using descartes rule of signs, synthetric division,upper bound and lower bound test, rational zero theorem, narrowing down choices using a ti-84 or ti-89 calcutior, or a combination of these methods. IMPORTANT NOTE: Our teacher we can't exclusively use the graphing calculator to determine the zeros of this function.

    My work so far:
    -plugged in 1 using synthetic devision, determined 1 was a zero. Then got decompressed function on bottom of synthetic division, x^3 -31x + 30.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Sep 2012
    From
    United States
    Posts
    12

    Re: Determining the zeros of x^4 -(x^3) -(31x^x) + x 30. EASY PRECAL PROBLEM

    http://images.pcmac.org/SiSFiles/Sch...0(day%201).pdf

    Above are the notes my teacher wants us to follow while solving this problem.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,583
    Thanks
    1418

    Re: Determining the zeros of x^4 -(x^3) -(31x^x) + x 30. EASY PRECAL PROBLEM

    It isn't really necessary to post the same thing twice!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Determining all the zeros of a function
    Posted in the Algebra Forum
    Replies: 5
    Last Post: March 5th 2011, 09:51 AM
  2. Precal help.. word problem w/ vectors
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: March 11th 2010, 05:23 PM
  3. Replies: 1
    Last Post: September 17th 2008, 06:40 PM
  4. Bearing/Navagation PreCal Problem
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: September 4th 2008, 04:09 PM
  5. Precal app problem
    Posted in the Math Topics Forum
    Replies: 6
    Last Post: October 13th 2007, 08:43 PM

Search Tags


/mathhelpforum @mathhelpforum