How can I find BM?

[bronze sage]

thank the lord that my school hasnt made me do vectors yet ;😭

[little lagoon]

here's the strategy:

1. find AB, using OA and OB. This will be the same vector as CD
2. Find CM, which should be half of CD
3. Find BM using BC and CM

[barren marten]

Sorry explain the first step

How did you find AB?

Oh wait

2b-a right?

[little lagoon]

yeah 👍

[barren marten]

Can you explain how it's the same vector as CD if CD has a different gradient?

[little lagoon]

CD doesnt tho theyre parallel

[barren marten]

sorry i just started vectors like 3 days ago I just wanna be clear

don't CB and AB meet in the trapezium?

OH!

How did I not see the parallelogram

[little lagoon]

😭 😭

[barren marten]

Allow me man

been doing vectors for 3 days

[little lagoon]

yeah for 3 days ur cold

it took me a while to wrap my head around vectors

[barren marten]

So BM is b+0.5a?

And OC and BM are parallel because BM is a factor of OC

[polar valve]

you should start revising them now

[little lagoon]

yup exactly

[bronze sage]

my teacher was like "dont revise topics like vectors cause its hard"

[polar valve]

clapped teacher

[bronze sage]

he basically wants me to learn it from him then revise to cover weak points ig

[polar valve]

ohh

ok that makes sense

yeah you should be covering harder content in year 10 though

[bronze sage]

i have it in my mocks so im prob gonna check it anyway

[polar valve]

makes doing the easier work easier ygm

[bronze sage]

we did like grade 9 topics

[polar valve]

yhyh

[bronze sage]

quad simultaneous etc

[polar valve]

thats calm

but

how come u havent done vectors yet?

thats a bit weird ibr

vectors is one of the lighter grade 9 topics

have you atleast done column vectors