Question

Can I do the cross product on these two vectors?
v= <2cost,-3sint>
a= <-2sint,-3cost>
Can I do the cross product on these two vectors?
v= <2cost,-3sint>
a= <-2sint,-3cost>
@Mathematics

Answer 1

Or is cross product only allowed in 3d? would I just set the z component to 0?

Answer 2

we can do its cross product

Answer 3

the cross product is only defined for 3 dimensional vectors

Answer 4

but can't we find it here

Answer 5

http://en.wikipedia.org/wiki/Cross_product

Answer 6

So I cant just let k be o in i,j,k?

Answer 7

why do you think you need the cross product? what is the question?

Answer 8

The question is to integrate the vectors: \[\int\limits_{}^{}aXv\]

Answer 9

The vectors cross product

Answer 10

v is derived from a position vector r and a is derived from v

Answer 11

And the next question is to integrate the magnitude of the vectors cross product:
\[\int\limits_{}^{}||aXv||dt\]

Answer 12

So thats why im not sure this is a supposed to be a dead end problem

Answer 13

i dont see how that makes any sense though. the cross product gives you a vector perpendicular to the ones you started with, which isnt possible in 2 dimensions

Answer 14

Yea, teach must of forgot a k component

Answer 15

Thanks