May 16th, 2016, 09:42 PM  #1 
Newbie Joined: May 2016 From: Sri Lanka Posts: 6 Thanks: 0  vector
Which of the following are meaningful products? A. (axb)xc B. (a.b)xc. C. (a.b)c. D. (a.b).c. E. a.(bxc). 
May 16th, 2016, 11:15 PM  #2 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,591 Thanks: 546 Math Focus: Yet to find out. 
Please don't duplicate posts.

May 17th, 2016, 04:08 AM  #3 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,169 Thanks: 867 
Do you have any idea what the notations "axb" and "a.b" mean? Please show some attempt at the problem so we will have an idea what you do and do not understand about the problem and will know what hints would be best. (Joppy, Lucky123 posted another thread titled "Vector" but it was a different problem.) Last edited by Country Boy; May 17th, 2016 at 04:10 AM. 
May 17th, 2016, 04:32 PM  #4 
Math Team Joined: Nov 2014 From: Australia Posts: 686 Thanks: 243 
Also Lucky, you seem to have "." at the end of several of the choices. Is this the same . you use for the dot product, or is it just a fullstop?


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