September 29th, 2018, 07:46 PM  #1 
Senior Member Joined: Apr 2017 From: New York Posts: 119 Thanks: 6  matrix elimination
What do you guys suggest to solve this question,please?

September 29th, 2018, 08:47 PM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 2,299 Thanks: 1218 
if elimination fails then the matrix has no inverse and thus it's determinant is 0. solve the resulting quadratic for it's two roots 
September 29th, 2018, 08:54 PM  #3 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,599 Thanks: 2587 Math Focus: Mainly analysis and algebra 
By inspection (using Romsek's idea) I'd say that zero and 3 are the numbers you are looking for.

September 29th, 2018, 10:29 PM  #4 
Senior Member Joined: Apr 2017 From: New York Posts: 119 Thanks: 6 
ok now I totally understand how to solve it. thanks 

Tags 
elimination, matrix 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Elimination Method  Indigo28  Algebra  5  January 7th, 2017 08:36 AM 
GJ elimination  Kinroh  Linear Algebra  0  May 6th, 2014 07:12 PM 
Subsitution or Elimination  titans4ever0927  Algebra  6  November 19th, 2007 06:33 PM 
Gauss Elimination = Matrix  Xeifrank  Algebra  3  August 10th, 2007 06:24 AM 
Gaus Elimination Help  Kdocimo90  Economics  1  December 31st, 1969 04:00 PM 