Posted by Anonymous on Sunday, March 30, 2008 at 9:57am.
Use the cross product to find a vector perpendicular to each of the following pairs.
a) (4,0,0) and (0,0,4)
I plugged in the cross product formula and got (0, 16, 0)

Math  check still need help  Anonymous, Sunday, March 30, 2008 at 10:17am
Find two vectors perpendicular to both (3, 6, 3) and (2, 4, 2).
I found one using the cross product. The one I found was (24, 12, 0). How would I find another one?

Math  check still need help  Reiny, Sunday, March 30, 2008 at 10:40am
[24,12,0] = 12[2,1,0]
any scalar multiple of [2,1,0] will work

Math  check  Reiny, Sunday, March 30, 2008 at 10:38am
If you reduce your vectors, you can find others with the same property.
eg. your vector [0,16,0] is 16[0,1,0]
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