(a) 28. let t:r->r' be a linear translormat ions given by the forimua 7(x,y, )- a(xy2) where a is a 3x3 real orthogonal matrix of determinant . then (tis an iso

(a) 28. Let T:R->R' be a linear translormat ions given by the forimua 7(x,y, )- A(xy2) where A is a 3x3 real orthogonal matrix of determinant . Then (Tis an isometry of R (6) the matrix of T with respect lo the usual basis of R' isA () the eigenvalues ofT are either I or -I (d) Tis surjective 1D.U. 2014 innar matrix d of order 2 x 2. Then a characteristic