Let W={(x,y,z)∈R3:x−2y+z=0}W = \{(x, y, z) \in \mathbb{R}^3 : x - 2y + z = 0\}W={(x,y,z)∈R3:x−2y+z=0}. What is the codimension of WWW in R3\mathbb{R}^3R3?
0
1
2
3