57. let m,, (r) be the vector space of 2 x 2 matrices over r and w = :x,y e r| and w= :ye r x :x,y,z eir, then dim (wnw,) is equal to 0 (a) 0 (c) 2 (b) 1 (d) 3

57. Let M,, (R) be the vector space of 2 x 2 matrices over R and W = :x,y e R| and W= :ye R x :x,y,z EIR, then dim (WnW,) is equal to 0 (a) 0 (c) 2 (b) 1 (d) 3 D3 then which one of the following vectors of R° is not in the span [S?