Posted by **j** on Thursday, May 24, 2012 at 10:51pm.

1. Find a unit vector which is perpendicular to both of the vectors m=[4, 2, -3] and n=[2, -3, 1]

- Calculus -
**MathMate**, Friday, May 25, 2012 at 7:41am
A vector perpendicular to both m and n is the cross product. After that, you only need to normalize it to make a unit vector.

Post if you need more help.

- Calculus -
**j**, Friday, May 25, 2012 at 12:13pm
| i j k |

| 4 2 -3 |

| 2 -3 1 |

= [-7,-10,-16]/9√5

like this? please check if it's correct, thanks MathMate

- Calculus -
**MathMate**, Friday, May 25, 2012 at 1:28pm
Correct!

- Calculus -
**j**, Saturday, May 26, 2012 at 1:17am
thank you !

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