Results 1 to 2 of 2

Thread: Systems in 3 Variables

  1. December 2nd 2009, 05:19 PM #1
    kelsikels
    kelsikels is offline
    Newbie
    Joined
    Dec 2009
    From
    Fallbrook
    Posts
    18

    Systems in 3 Variables

    Have to find x,y,and z.

    1.)
    x - y - 5z = -2
    y + 3z = 9
    x + y + z = 16

    HELP ASAP please& thank you
    Follow Math Help Forum on Facebook and Google+
  2. December 2nd 2009, 06:04 PM #2
    pickslides
    pickslides is offline
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,234
    Thanks
    26
    Solve this

    \left[ \begin{array}{c}<br /> x\\<br /> y\\<br /> z\end{array}\right]=\left[ \begin{array}{ccc}<br /> 1 & -1 & -5 \\<br /> 0 & 1 & 3 \\<br /> 1 & 1 & 1 \end{array} \right]^{-1} \left[ \begin{array}{c}<br /> -2\\<br /> 9\\<br /> 16\end{array}\right]
    Follow Math Help Forum on Facebook and Google+
« Matrix- using row operations | Simplifying Radicals »

Similar Math Help Forum Discussions

  1. systems of equations in three variables.
    Posted in the Algebra Forum
    Replies: 8
    Last Post: December 21st 2010, 01:31 PM
  2. Systems in 3 variables #2
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: December 3rd 2009, 02:13 AM
  3. Help solving systems with 3 variables
    Posted in the Calculus Forum
    Replies: 2
    Last Post: October 27th 2008, 09:42 AM
  4. Systems Of Linear Equations in Three Variables
    Posted in the Algebra Forum
    Replies: 3
    Last Post: March 9th 2008, 11:30 AM
  5. Systems of nonlinear equations in two variables
    Posted in the Algebra Forum
    Replies: 1
    Last Post: November 16th 2007, 08:17 PM

Search Tags


/mathhelpforum @mathhelpforum