# Need help with vectors q!

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Thread starter 1 month ago
#1
Attachment 880964

Would much appreciate it if anyone could help with b) thanks!
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1 month ago
#2
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Thread starter 1 month ago
#3
(Original post by Sir Cumference)
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Wow so sorry, hope this helps
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1 month ago
#4
should i do it instead
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Thread starter 1 month ago
#5
Any help would be much appreciated!
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1 month ago
#6
p is the midpoint of ao, ao =ob because 2 sides on a isoceles triangle are equal. therefore pq is parallel to ob . Did it help? Plz like
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Thread starter 1 month ago
#7
(Original post by mozino111)
p is the midpoint of ao, ao =ob because 2 sides on a isoceles triangle are equal. therefore pq is parallel to ob . Did it help? Plz like
How would you find k? I’m kinda confused about that part. Thanks!
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1 month ago
#8
It's just a matter of comparing coefficients.

The equation we have is.

a + lambda(-a + b) = (2/3)a + ub
a - lambda.a + lambda.b = (2/3)a + ub
a(1 - lambda - 2/3) + b(lambda - u) = 0

Now, since the rhs is zero, then so also is the lhs, which means that we must set the coefficients of a and b to zero.
Doing this gives us,

1 - lambda - 2/3 = 0
lambda - u = 0

or

1 - lambda = 2/3
lambda = u
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Thread starter 1 month ago
#9
How would that help me find k though?
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1 month ago
#10
(Original post by camelgeres)
How would you find k? I’m kinda confused about that part. Thanks!
scale factor
bro
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1 month ago
#11
(Original post by camelgeres)
How would that help me find k though?
what year are you in .
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Thread starter 1 month ago
#12
12
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1 month ago
#13
(Original post by camelgeres)
How would that help me find k though?
Dude
Scale factor
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Thread starter 1 month ago
#14
What scale factor are you talking about?
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