If `P={1,2}` then `PxxPxxP={(1,1,1,),(2,2,2),(1,2,2,),(2,1,1)}`

Let P={1,2} .Find PxxPxxP

If P={1,2},form the set of PxxPxxP .

If P={-1,1} ,form the set PxxPxxP .

Let P={1, 2, 3} and a relation on set P is given by the set R={(1,2),(1,3),(2,1),(1,1),(2,2),(3,3),(2,3)}. Then R is:

Show that the points (1,1,1),(2,-1,2),(-1,2,2) and (2,2,-1) are coplanar.

If A=[(2,-1,1),(-1,2,-1),(1,-1,2)] then A^(2)=