I dont get what the title means.
What is a non-zero scalar just any value i.e. 4.
so 4(4i+j) = 16i + 4j gives a parallel vector smh.
Parallel to the initial vector?
Multiplying a vector by a non-zero scalar always produces a parallel vector means? watch
-
Mihael_Keehl
- Follow
- 54 followers
- 13 badges
- Send a private message to Mihael_Keehl
- Thread Starter
Offline13ReputationRep:- Follow
- 1
- 19-10-2015 17:27
-
__Adam__
- Follow
- 6 followers
- 1 badge
- Send a private message to __Adam__
- Visit __Adam__'s homepage!
Offline1ReputationRep:- Follow
- 2
- 19-10-2015 17:39
(Original post by Mihael_Keehl)
I dont get what the title means.
What is a non-zero scalar just any value i.e. 4.
so 4(4i+j) = 16i + 4j gives a parallel vector smh.
Parallel to the initial vector?
In the above, both are pointing in the same direction, so they're parallel, it doesn't matter that one of them is twice the other. -
Mihael_Keehl
- Follow
- 54 followers
- 13 badges
- Send a private message to Mihael_Keehl
- Thread Starter
Offline13ReputationRep:- Follow
- 3
- 19-10-2015 17:42
(Original post by __Adam__)
A scalar is just a single number (like 4), whereas a vector has more than one component (i and j). Parallel vectors are just vectors that are pointing in the same direction
In the above, both are pointing in the same direction, so they're parallel, it doesn't matter that one of them is twice the other.
Thank you for the visual interpretation. -
__Adam__
- Follow
- 6 followers
- 1 badge
- Send a private message to __Adam__
- Visit __Adam__'s homepage!
Offline1ReputationRep:- Follow
- 4
- 19-10-2015 17:50
(Original post by Mihael_Keehl)
Ofc, so the vector will have another vector which is a scalar multiple of itself, so it will point in the same direction. Is that correct?
Thank you for the visual interpretation.
The only thing is, if you multiply by a negative number it'll point in the opposite direction, which is called "antiparallel". But that's probably not very important.
-
Mihael_Keehl
- Follow
- 54 followers
- 13 badges
- Send a private message to Mihael_Keehl
- Thread Starter
Offline13ReputationRep:- Follow
- 5
- 19-10-2015 17:51
(Original post by __Adam__)
Yeah that's all it is, if you multiply a vector by a number it doesn't change the direction, just the size of it.
The only thing is, if you multiply by a negative number it'll point in the opposite direction, which is called "antiparallel". But that's probably not very important.
-
University of Leeds
-
Royal Holloway University of London
-
University of Aberdeen
-
Computer Science and Mathematics
Keele University
-
Computer Science and Mathematics with Placement
University of Bath
-
University of St Andrews
-
University of Oxford
-
Mathematics and Computing with an Integrated Foundation Year with Professional Development
Brunel University London
-
University of Oxford
-
University of Oxford
We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.
- SherlockHolmes
- Notnek
- charco
- Mr M
- Changing Skies
- F1's Finest
- rayquaza17
- RDKGames
- davros
- Gingerbread101
- Kvothe the Arcane
- TeeEff
- The Empire Odyssey
- Protostar
- TheConfusedMedic
- nisha.sri
- claireestelle
- Doonesbury
- furryface12
- Amefish
- harryleavey
- Lemur14
- brainzistheword
- Rexar
- Sonechka
- TheAnxiousSloth
- EstelOfTheEyrie
- CoffeeAndPolitics
- an_atheist
- Labrador99
- EmilySarah00