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