Posted by **J** on Wednesday, May 9, 2012 at 1:30am.

Determine the vector u = AB and its magnitude, given A(3,7,-2) and B(9,1,5).

- Calculus -
**Reiny**, Wednesday, May 9, 2012 at 8:02am
u = [9-3,1-7,5+2] = [6,-6,7]

|u| = √(36+36+49) = √121 = 11

- Calculus -
**J**, Thursday, May 10, 2012 at 4:15pm
thankyou!

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