Results 1 to 2 of 2

Math Help - Require assistance with this vectors question. #1

  1. #1
    Newbie
    Joined
    Feb 2013
    From
    Australia
    Posts
    1

    Question Require assistance with this vectors question. #1

    Require assistance with this vectors question. #1-1.jpg
    Extremely difficult for me, just started learning about vectors, need a worked solution.
    Problem is in the image attached.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123

    Re: Require assistance with this vectors question. #1

    Quote Originally Posted by kel0021 View Post
    Click image for larger version. 

Name:	1.jpg 
Views:	6 
Size:	240.4 KB 
ID:	27238
    Extremely difficult for me, just started learning about vectors, need a worked solution.
    Problem is in the image attached.
    Use your index finger to do those exercises:

    1. Go from A to C: From A to B + from B to C. With vectors:

    \overrightarrow{AC} = \vec a + \vec b

    Since P is the midpoint of AC you'll get:

    \overrightarrow{AP} = \frac12 (\vec a + \vec b)

    2. According the method from #1 you'll get

    \overrightarrow{AQ} = \vec a + \frac12 \cdot \vec b

    3. You "go" from P to Q like: From P to A + from A to Q. With vectors:

    \overrightarrow{PQ} = -\frac12 \cdot ( \vec a + \vec b) + \vec a + \frac12 \cdot \vec b

    \overrightarrow{PQ} = \frac12 \cdot  \vec a

    4. This vector has the same direction as \vec a and half of it's length.
    Attached Thumbnails Attached Thumbnails Require assistance with this vectors question. #1-midparall3eck.png  
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: October 31st 2012, 11:31 AM
  2. Replies: 7
    Last Post: December 7th 2010, 05:47 PM
  3. [SOLVED] lebesgue integral exercise, it's easy but I still require assistance
    Posted in the Differential Geometry Forum
    Replies: 0
    Last Post: October 28th 2010, 04:04 AM
  4. Replies: 3
    Last Post: March 21st 2009, 01:31 PM
  5. Require assistance with a distribution problem
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: November 22nd 2008, 09:18 PM

Search Tags


/mathhelpforum @mathhelpforum