Question

What is the cross product of `[2, -5, 8]` and `[3, 7, 9]`?

Answer 1

`veca x vecb=29i+6j+29k`

Explanation:

`"The cross product of two vector ," vec a and vec b " is given by:"`
`"i,j,k are unit vectors"`
`veca x vecb=i(a_jb_k-a_kb_j)-j(a_ib_k-a_kb_i)+k(a_ib_j-a_jb_i)`
`veca x vecb=i(2.7+3.5)-j(2.9-8.3)+k(2.7+3.5)`
`veca xvec b=i(29)-j(-6)+k(29)`
`veca x vecb=29i+6j+29k`