tek_j11_7lc74ea
幼苗
共回答了15个问题采纳率:93.3% 举报
A= 求 (AA’)^-1
1 0 0
1 1 -1
-1 0 1
AA’ =
1 0 0
3 1 -2
-2 0 -1
(AA’,E) =
1 0 0 1 0 0
3 1 -2 0 1 0
-2 0 -1 0 0 1
r2-3r1,r2+2r1
1 0 0 1 0 0
0 1 -2 -3 1 0
0 0 -1 2 0 1
r3*(-1),r2+2r3
1 0 0 1 0 0
0 1 0 -7 1 -2
0 0 1 -2 0 -1
所以 (AA’)^-1 =
1 0 0
-7 1 -2
-2 0 -1
1年前
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