Determine the position vector of the point D halfway along BC.
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Determine the position vector of the point D halfway along BC.

[From: ] [author: ] [Date: 12-03-20] [Hit: ]
-Okay, time for some naughty Maths.Making gross assumptions due to the unsusual format of your question...Our calculation is b + c divided by 2,......
The position vectors of three points A, B and C (relative to an origin O) are given by
a = i + j + 2k , b = 2i + 3j + 5k , c = 2i + 4j + 2k .

Determine the position vector of the point D halfway along BC.

-
Okay, time for some naughty Maths.

Making gross assumptions due to the unsusual format of your question...

Our calculation is b + c divided by 2, with respect to the origin.

therefore...

(4i + 7j + 7k)/2 as you write it.

giving 2i + 3.5j + 3.5k

But the format of this question/answer is naturally poor as it is hard to display vectors/ co-ordinates on here.
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