Which one of the following matrices has an inverse?

For a coordinate transformation where Vp and Vq are to be expressed in terms of Vα and Vβ as [[Vp],[Vq]]=S[[Vα],[Vβ]], the possible option(s) for matrix S is/ar...

For a given vector w=[1 2 3]T, the vector normal to the plane defined by wTX=1 is _______.