Q)
(chatquestion)...Let M be a 3x3 orthogonal matrix. Let A be the 2x2 matrix in the upper- left corner of M and
let B the 1x1 matrix in the lower - right corner of M. Let M, be the 3x3 matrix whose first 2
columns are first 2 columns of M and whose remaining 1 columns is the last column of I3. Let M2
be the 3x3 matrix whose first 2 columns identical to l3 and the last 1 columns those of M. Which
of the following is(are) correct?
(A) MM, = M,
(B) M'M, = M,
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(C) det(M,-|det(M, )|
(D) det(A)| - |det(B)|
1 Answer
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