
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
July 6th, 2017, 10:14 AM  #1 
Newbie Joined: Jun 2017 From: Wisconsin Posts: 15 Thanks: 0  Confused about when to Pivot in a Tableau Table
I'm a bit confused about when to pivot in a tableau table using the simplex method. Here is the problem: Pivot about the indicated 2 of the following initial simplex tableau x1 x2 x3 s1 s2 s3 z 2 1 1 1 0 0 0 150 1 2 8 0 1 0 0 200 2 3 1 0 0 1 0 320 _______________________________ 3 2 1 0 0 0 1 0 In my textbook it states "to change the tableau by using one of the nonzero entries of the tableau as a pivot." So in that case why are they pivoting on the 2 in the first column, first row for x1? Wouldn't the nonzero entries be s1, s2 and s3 since they are basic variables? 

Tags 
confused, pivot, table, tableau 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Make my long table viewable help with table alignment  vs140580  LaTex Help  1  February 25th, 2017 08:53 PM 
simplex method with same pivot number  blimper  Linear Algebra  0  September 18th, 2016 09:50 AM 
Pivot Point on Polyhedron Problem  bitaxas  Abstract Algebra  0  December 4th, 2014 11:11 AM 
how to determinate the unknowns of this simplex tableau [on hold]  anouarattn  Linear Algebra  0  July 10th, 2014 06:18 PM 
Pivot positions  Mathforum1000  Linear Algebra  2  June 27th, 2012 11:34 AM 