Question

Question about vectors: find the length of the median through O of triangle OAB, where A =(1, 2, 3) & B=(1,-2, 1).
Please help!

Answer 1

well can you draw it ? btw O(0,0,0)

Answer 2

and the median from O is going to pass the midpoint of .......
if you can find the midpoint, you just then need to find length from the midpoint to the origin

Answer 3

Its going to pass the midpoint of AB
I think I need to find the length from a to midpoint

Answer 4

The answer is 3/2 root 10

Answer 5

In my opinion the answer will be 1/3 root 20