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Posted by 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 - , 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 - , 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 - , 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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