※ 引述《superdevil (綠惡魔)》之銘言：
: http://i.imgur.com/Ul3Lfha.jpg
: 有什麼技巧嗎?
: 2)利用Gauss-Jordan消去法求反矩陣,如果過程中兩列互換是不是就求不出來了？
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: Sent from JPTT on my HTC_E9x.
A =
[ cos(phi) -sin(phi) 0 ] [ 1 0 0 ] [ 1 0 0 ]
[ sin(phi) cos(phi) 0 ] [ 0 sin(theta) 0 ] [ 0 0 1 ]
[ 0 0 1 ] [ 0 0 1 ] [ 0 1 0 ]
[ sin(theta) cos(theta) 0 ] [ 1 0 0 ]
[ -cos(theta) sin(theta) 0 ] [ 0 r 0 ]
[ 0 0 1 ] [ 0 0 r ]
= rotator * diagonal matrix * permutation matrix * rotator * diagonal matrix
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