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 Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion

January 30th, 2018, 05:33 AM   #1
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Joined: Dec 2014
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Vector Triangle

Hi all

Regards

Jim
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 January 30th, 2018, 05:38 AM #2 Senior Member   Joined: Oct 2009 Posts: 730 Thanks: 249 Take $A$ to be the origin. Can you express B and C in terms of a and b? Can you then express M and N in terms of a and b?
 January 30th, 2018, 05:54 AM #3 Newbie   Joined: Dec 2014 From: UK Posts: 11 Thanks: 0 I do apologise but you have lost me. Can you be a bit more detailed in your questions please? I do want to worked it out for myself and do appreciate you are trying to point me in the right direction!
 January 30th, 2018, 09:25 AM #4 Senior Member   Joined: Oct 2009 Posts: 730 Thanks: 249 If AC = 2a, then what is AM? What is the equation of points on the line BC in terms of AC and AB?
 February 3rd, 2018, 11:47 PM #5 Newbie   Joined: Dec 2014 From: UK Posts: 11 Thanks: 0 AM = a -3b-2a Is that correct?
 February 4th, 2018, 08:59 AM #6 Global Moderator   Joined: Dec 2006 Posts: 20,262 Thanks: 1958 $\vec{CB} = \vec{AB} - \vec{AC} = 3\textbf{b} - 2\textbf{a}$ Express $\vec{CN}$ as a fraction of $\vec{CB}$. $\vec{MN} = \vec{MC} + \vec{CN} = \textbf{a } +$ . . .

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