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What is the cross product of #[4, -4, 4]# and #[5, 2, -2] #?

1 Answer

Feb 8, 2016

#P X Q=28j-12k#

Explanation:

#P(a,b,c); Q(d,e,f)#
#P X Q=i(b*f-c*e)-j(a*f-c*d)+k(a*e-b*d)#
#(4,-4,4) X (5,2,-2)=i(8-8)-j(-28)+k(-12)#
#P X Q=28j-12k#

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