Answer to Question #5959 in Linear Algebra for Lyndsey
Then appling cofactor expansion we rewrite the determinant opening it by the first row:
So axb=(a2*b3 - a3*b2,a3*b1 - a1*b3,a1*b2 - a2*b1).
Hence if a=(1,0,0) and b=(0,0,1) then we have
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