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What is the cross product of #<1,2,-4># and #<-1,-1,2>#?

1 Answer

Mar 5, 2016

#vec a x vec b=2j+k#

Explanation:

enter image source here
#vec a=<1,2,-4>" " vec b=<-1,-1,2>#
#vec a x vec b=i(4-4)-j(2-4)+k(-1+2)#
#vec a x vec b=2j+k#

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