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Simple cross product question. Please help

  • Thread starter max8404
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  • #1
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simple cross product question. Please help!!!

Homework Statement



Hey guys, I know how cross product works,

i-->j-->k : positive numbers
i<--j<--k : negative number

Homework Equations



The question that I have is, say I have -k x -i, I am supposed to get a positive j since the two negatives cancel out, is that correct? I would really appreciate any help, I have a final in less than 10 hours and would love a quick response! :)
 

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
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(-k)x(-i) is +j. Yes, it's the same as (k)x(i).
 
  • #3
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(-k)x(-i) is +j. Yes, it's the same as (k)x(i).

excellent! thanks for your quick response. Now, to continue studying for this nasty final! :)
 

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