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 December 26th, 2018, 05:00 AM #1 Member   Joined: Aug 2018 From: Nigeria Posts: 73 Thanks: 2 Vector If a=3u-v,b=-u+2v and c=3u+4v where u and v are two non-parallel vectors 1.Draw the vectors on a plane using magnitudes and slope angles 2.Express c in terms of a and b 3.determine the magnitude of the vector d=3a+2b+c.Given that u and v unit vectors inclined at 60°. Help me....!!!!!
December 26th, 2018, 06:32 AM   #2
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Quote:
 Originally Posted by Harmeed If a=3u-v,b=-u+2v and c=3u+4v where u and v are two non-parallel vectors 1.Draw the vectors on a plane using magnitudes and slope angles 2.Express c in terms of a and b 3.determine the magnitude of the vector d=3a+2b+c.Given that u and v unit vectors inclined at 60°.
Are you given vectors u and v in a diagram or written in component form?

 December 26th, 2018, 07:34 AM #3 Member   Joined: Aug 2018 From: Nigeria Posts: 73 Thanks: 2 The vector are given in component form
 December 26th, 2018, 07:36 AM #4 Member   Joined: Aug 2018 From: Nigeria Posts: 73 Thanks: 2 I don't know how to solve a thing in that question.
December 26th, 2018, 10:07 AM   #5
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Quote:
 Originally Posted by Harmeed The vector are given in component form
Can you disclose that given information for vectors u and v , or do we have to play a guessing game?

 December 26th, 2018, 12:07 PM #6 Member   Joined: Aug 2018 From: Nigeria Posts: 73 Thanks: 2 It is in the question above a=3u-v b=u+2v c=3u+4v
December 26th, 2018, 12:20 PM   #7
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Quote:
 Originally Posted by Harmeed It is in the question above a=3u-v b=u+2v c=3u+4v
... those are vectors a, b, and c in terms of vectors u and v.

I asked you in post #2 if you were given vectors u and v.

 December 26th, 2018, 12:33 PM #8 Member   Joined: Aug 2018 From: Nigeria Posts: 73 Thanks: 2 Please sir,can you solve this question?
 December 26th, 2018, 12:35 PM #9 Member   Joined: Aug 2018 From: Nigeria Posts: 73 Thanks: 2 They are two non parallel vector components
December 26th, 2018, 12:37 PM   #10
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Quote:
 Originally Posted by Harmeed Please sir,can you solve this question?
Can you answer skeeter's question? Are you given the vectors u and v? We have to start making assumptions if you don't have them. Begging for an answer, however politely, will not get any of us anywhere.

Without knowing what u and v are:
1. Is simply impossible.

2. We don't have a unique answer for this.

3. Can't be done until we can solve 2.

-Dan

Last edited by topsquark; December 26th, 2018 at 12:40 PM.

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