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jarod83

Vectors!

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I need to learn vectors, but I dont know where to start... If there is any turtorials, or something that I can use to get started, please let me know. thx

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Hi, i guess you are too young because we all learn vectors in school (math), well... use google, put this on search "3d math tutorials". Well... a vector is like an arrow, it has a start point and an end point, each point has coordinates (x,y) in 2D and (x,y,z) in 3d. Is very simple and VERY useful. Good luck.

Bye

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Check out Articles & Resources -> Math & Physics on this site...

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quote:
Original post by _Rambo_
Well... a vector is like an arrow, it has a start point and an end point, each point has coordinates (x,y) in 2D and (x,y,z) in 3d. Is very simple and VERY useful. Good luck.


Euhmz... is a vector not just a direction, and a vector combined with a beginning a scalar...? Or am I just a confused person at the moment

Curses on my school... They ditched Vector and Matric math for silly Functions.

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Okay.

There are basically 2 kinds of 2d vectors.

u = [x,y]
v = [mag, theta]


Both kinds can be represented graphicslly by placing one end at the origin and drawing a line from the origin to the point.

In a cartesian plane, the end is denoted by the [x,y].

In a mag-theta type vector(sorry don`t know the term for it nor the plane`s name), there is a direction(theta) and how far to go along that direction,(mag).

Thats you intro to vectors...
Please find tutorials on them for further info.

There are hordes out there- find one you like.

-V''lion

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Ok, people in this thread ( including people who think they know what they are talking about - but don''t ), I suggest you either read mine or another good article on this, because you seem to just be getting confused.

Vlion - you are only talking about position vectors, which are a special case. Vectors have direction and magnetude, not position. Only position vectors have a position, and usually start at the origin ( hence they can be used to represent points in space ). Oh look, I can''t be bothered to type out this again, read my article, or there was actually a thread in this forum near to when it was created. I remember debating with a guy there on the representation of vectors, so I suggest you try to dig that up.

- Phil.

Death of one is a tragedy, death of a million is just a statistic.

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quote:
Original post by python_regious
Yes... like this one...

PLUG: Vectors and Matrices: A Primer

hehe

Death of one is a tragedy, death of a million is just a statistic.


I''ll second that plug. This is a very good article for learning about vectors, matrices, and transformations.

Graham Rhodes
Senior Scientist
Applied Research Associates, Inc.

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