My Math Forum  

Go Back   My Math Forum > College Math Forum > Linear Algebra

Linear Algebra Linear Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
November 9th, 2010, 07:34 AM   #1
Member
 
Joined: Apr 2010

Posts: 91
Thanks: 0

Solving for X (inverses)

Let , where and are invertible n x n matrices. What does X equal to?

Attempt:













but I dont think this is right.
TsAmE is offline  
 
November 9th, 2010, 01:47 PM   #2
Global Moderator
 
Joined: May 2007

Posts: 6,835
Thanks: 733

Re: Solving for X (inverses)

Quote:
Originally Posted by TsAmE
Let , where and are invertible n x n matrices. What does X equal to?

Attempt:













but I dont think this is right.
Looks good to me.
mathman is offline  
November 9th, 2010, 02:42 PM   #3
six
Senior Member
 
Joined: Oct 2009

Posts: 105
Thanks: 0

Re: Solving for X (inverses)

What makes you think it's not correct?
six is offline  
November 9th, 2010, 11:28 PM   #4
Member
 
Joined: Apr 2010

Posts: 91
Thanks: 0

Re: Solving for X (inverses)

It was a multiple choice question, but I am not getting the right form. Here are the options:

A)

B)

C)

D)

E)
TsAmE is offline  
November 10th, 2010, 04:07 AM   #5
Senior Member
 
Joined: May 2008
From: York, UK

Posts: 1,300
Thanks: 0

Re: Solving for X (inverses)

What happens when you multiply the into the terms in parentheses on its right hand side?
mattpi is offline  
November 10th, 2010, 04:21 AM   #6
Member
 
Joined: Apr 2010

Posts: 91
Thanks: 0

Re: Solving for X (inverses)

You get the answer E). Thanks
TsAmE is offline  
Reply

  My Math Forum > College Math Forum > Linear Algebra

Tags
inverses, solving



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
One to one function and inverses hooperoo Algebra 7 March 6th, 2013 09:28 PM
Find all integers which have inverses modulo 8, and... craighill5 Number Theory 3 February 21st, 2012 05:02 AM
inverses norm abrams Algebra 10 January 13th, 2012 02:49 AM
Sum of certain inverses mod pē Pell's fish Number Theory 1 November 13th, 2011 05:51 PM
Need help with proof about inverses PLEASE! emlevy Abstract Algebra 2 April 29th, 2010 11:33 AM





Copyright © 2019 My Math Forum. All rights reserved.