If `xyz=m` and det p=`|(x,y,z),(z,x,y),(y,z,x)|`, where `p` is an orthogonal matrix.
(a) The value`x^-1+y^-1+z^-1` is
(a) `+-m`
(b) `+-1`
(c) `0`
(d) `m^2`


(2) The value`x^3+y^3+z^3` can be
(a) `6m+-1`
(b) `3m+-1`
(c) `+-3m`
(d) none of these

Answer

(1) C, (2) B