作者mqazz1 (无法显示)
看板Math
标题[线代] 三角函数sin的对角化
时间Tue Jan 25 20:48:30 2011
[ -1 1 1 ]
let A = [ 2 -2 -3 ]
[ -2 2 3 ]
a = sin(1)
find sin(A^2001) = ?
请问这题要怎麽解?
我已经求出
[ 1 1 0 ] [ 1 -1 -1 ]
可逆矩阵P = [ -1 1 -1 ] P^(-1) = [ 0 1 1 ]
[ 1 0 1 ] [ -1 1 2 ]
[ -1 0 0 ]
对角矩阵D = [ 0 0 0 ]
[ 0 0 1 ]
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