Question

Find the cross product a × b.
a = (6, 0, −4) b = (0, 6, 0)

Answer 1

a = (6, 0, −4) b = (0, 6, 0)
the proper way of writting it is
a = (6i, 0j, −4k) b = (0i, 6j, 0k)
now multiply each term of a with each term of b and show me each term containing i,j,k

Answer 2

multiply the a with corresponding b? Wouldn't you just get 0?

Answer 3

may be zero is the answer but you have to go through to conform it like i will go for the first few terms as
axb = 0 ixi +36 ixj + 0 ixk and so on
do the rest to conform your answer

Answer 4

I see, thank you again!

Answer 5

welcome man

Answer 6

but always remember
ixi = 0
ixj = k
ixk = -j
jxj = 0
jxi = -k
jxk = i
kxk = 0
kxi = j
kxj = -i