Geometric Proofs Using Vectors

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Amazing video, I finally understand proofs!

KJLazarus
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For question c can't you also use OA TO AC?

yangyang
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at 11:19 i dont understand how/why the ratio (DC:CB=1:2) means DC is half of CB? because doesn't this ratio simply mean DC is 1/3 and CB is 2/3? part c is kind of confusing...

cj
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6:45. =b + 1/2a - 1/2b = 1/2a + 1/2b Where did the first b go?

MatthewThrone
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why is -a + -1/2a equal to -3/2a? algebraic wise i don't understand

gaz
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but u would never be asked the first example in an exam

gerrywaldon
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Probably gonna fail my exam tomorrow. Fuck maths

neperqiell
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