Does the Cross Product of -k and -i Result in +j?

AI Thread Summary
The cross product of -k and -i results in +j, as the two negative signs cancel each other out. This is equivalent to the cross product of k and i, which also yields +j. The discussion emphasizes the correct application of the cross product rules. The user expresses urgency due to an upcoming final exam. Overall, the clarification reinforces understanding of vector operations in physics.
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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! :)
 
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(-k)x(-i) is +j. Yes, it's the same as (k)x(i).
 


Dick said:
(-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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