请帮忙解这个数分的题Find an analytic (symbolic) description of the map
请帮忙解这个数分的题 Find an analytic (symbolic) description of the mapping that assigns to a non-zero vector x∈ Rn the vector of length 2 that points in the direction opposite to x.In case n = 3 ,that is if x = (x,y,z) ,determine the component functions of this mapping.Is it possible to define the image of the mapping at (0,0,0) such that it is continuous on R3 Justify your answer.