(Choose 1 answer)
(See picture)
A. Only (i)
B. Neither (i) nor (ii)
C. Only (ii)
D. Both (i) and (ii)
Suppose that the set of vectors {X1, X2, X3, X4} is orthogonal. Which of the following sets are also orthogonal?
(i){X1 + X2, X2 +X3}
(ii){X1 + X2, X3 + X4}
wi
