
Re: [線代] 請教3個反矩陣相乘公式

: 請教A與?的算法 謝謝
-1 1
[a b] = -----[ d -b]
[c d] ad-bc[-c a]
-1 1
[S+1 -1] = ----------[S+1 1]
[0 S+1] (S+1)(S+1)[0 S+1]
1
所求=[2 0]*----------[S+1 1]*[0]
(S+1)(S+1)[0 S+1] [1]
1
=----------[2 0][S+1 1][0]
(S+1)(S+1) [0 S+1][1]
2
=----------
(S+1)(S+1)
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