#vector help please

37 messages · Page 1 of 1 (latest)

lament notch
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i am in year 11, second year of gcses and i really cant understand vectors. they look easy but i really dont get them. can someone help me please

light craterBOT
glad condor
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This is vectors as in physics right?

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What exactly are you confused by?

fair pelican
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Sorry if sounds like a stupid question i just need to have an idea what you do/don't know

lament notch
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its in maths!

lament notch
lament notch
fair pelican
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Okay thats fine

lament notch
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yh

fair pelican
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Okay so if you were to live somewhere windy, then those winds can be weaker or stronger right

And the wind could also be blowing onto your side, or blowing right in front of your face

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If you combine the notion of "strength" that winds have with "direction" (i.e. which way the wind is blowing) then you could call the wind a vector

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Is that making any sense

lament notch
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yeah

fair pelican
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Okay

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Now imagine modelling not just wind but a whole array of quantities as "vectors" with this notion of "strength" AND "direction. Vectors could include:
Air, water, position relative to a fixed point, the force you exert in order to lift a weight or drive a car (by the engine obviously)

fair pelican
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It's a good idea to practice in order to understand them better

lament notch
fair pelican
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Okay which part are you struggling with

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I think the idea of those is to like find one route, and then find another equivalent (but typically more convoluted) route

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Like for example given vertices A, B, C and edges = (AB, BC, CA). You could go along AB, along, BC or you could equivalently go backwards along AC

lament notch
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yessss that

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like in general

lament notch
fair pelican
# lament notch legit all of it

All i can say then is
Do as many questions as you can, watch yt videos, read online, go through your teacher's PowerPoint slides etc.

I can't teach you the whole topic you have to do that yourself by practicing a lot of questions, but if you are stuck on a particular question i can try to help

lament notch
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tysm!

fair pelican
lament notch
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yes

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how do i do that

leaden horizon
# lament notch i am in year 11, second year of gcses and i really cant understand vectors. they...

3Blue1Brown has some really good explanations for vectors in math (https://youtu.be/fNk_zzaMoSs?si=fkOPUiCBLaCKiQiU)

Beginning the linear algebra series with the basics.
Help fund future projects: https://www.patreon.com/3blue1brown

Music: https://vincerubinetti.bandcamp.com/track/grants-etude

Thanks to Elo Marie Viennot and Ambros Gleixner from HTW Berlin (www.htw-berlin.de) for contributing German translations and dubbing.

Thanks also to these viewers for...

▶ Play video
fair pelican
lament notch
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lets just say that i karked it as problem resolved then

fair pelican
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Or .resolved idk