
Linear Algebra Linear Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
January 30th, 2014, 04:18 PM  #1 
Senior Member Joined: Nov 2013 Posts: 137 Thanks: 1  derivative of unit vector
So, a simple question. How derivate an unit vector wrt any variable? I can derivate any unit vector wrt ? or ?, obivious, but how derivate the vector ? wrt to x, for example? What is the rule? What is formula? I already searched and I not found.

January 31st, 2014, 12:43 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,307 Thanks: 526  Re: derivative of unit vector
Let u be unit vector. Use chain rule. du/dx = ?u/??d?/dx + ?u/??d?/dx 

Tags 
derivative, unit, vector 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
unit vector  alexmath  Algebra  4  January 3rd, 2013 12:43 PM 
How to find unit vector  daigo  Algebra  3  July 2nd, 2012 11:55 AM 
Unit Vector  fsufreak78  Calculus  2  March 3rd, 2012 09:27 AM 
Can a unit vector be negative?  fzeropro  Linear Algebra  3  July 19th, 2008 08:23 PM 
Find a unit vector  al1850  Calculus  4  May 3rd, 2008 04:04 PM 