\CROSSPRODUCT(1,-1,2)(3,5,-1)%
             (\sola,\solb,\solc)
$(1,-1,2)\times(3,5,-1)=(\sola,\solb,\solc)$

\VECTORPRODUCT(1,-1,2)(-3,3,-6)%
             (\sola,\solb,\solc)
$(1,-1,2)\times(-3,3,-6)=(\sola,\solb,\solc)$