Question

This is about vectors

Answer 1

looks good, uve used the linear comb thingy,
but still the question wants u to justify it using the scalar triple product, u.vxw

Answer 2

so its wrong?

Answer 3

wat u did is one way of doing it.
but the question wants u to use u.vxw

Answer 4

u familiar wid scalar triple product right ?

Answer 5

no not really i was confused when the u.vxw came up

Answer 6

how would i approach that answer using the other method

Answer 7

think of a cube/parallelopiped

Answer 8

http://www.vitutor.com/geometry/vectors/tiple_product.html does this website show a good example in how to solve it?