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£¨±ÈÈ磺AX=I£¬ÆäÖÐAºÍIΪÒÑÖª¾ØÕó£¬XÊÇδ֪¾ØÕ󣬱ÈÈçX=[a b;c d]£©£¿

[ Last edited by huangkz on 2008-2-25 at 18:38 ]

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huangkz(½ð±Ò+1,VIP+0):thanks!²»¹ýûÓÐÕâô¼òµ¥£¬¾ßÌåÎÊÌâÈçÏ£¡
È磺A=[1  2  3; 4  2  6; 7  4  9]£»
I=[4;1; 2];

X=A\I
X=[-1.5;2;0.5]
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3Â¥2008-02-25 19:38:00
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huangkz

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4Â¥2008-02-26 09:39:01
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nucleus01

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huangkz

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nucleus01

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huangkz(½ð±Ò+4,VIP+0):Thanks! ·½³ÌÓÃsolve½â,»¹ÊÇÌ«·±ÁË£¬16¸ö·½³Ì£¬¶øÇҽⲻ³ö£¡²»¹ý»¹ÊÇлл£¬×ÜËãÖªµÀÖ±»ýÔõôÇóÁË£¡
syms  a  b  c  d e f g h;
A=[a b;c d];
B=[e f:g h];
C=kron(A,B);
R0=[1 0 0 i;0 1 -i 0;0 -i 1 0;i 0 0 1];
ii=1/sqrt(2);
R=ii*R0;
P=C*R;

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C =

[ a*e, a*f, b*e, b*f]
[ a*g, a*h, b*g, b*h]
[ c*e, c*f, d*e, d*f]
[ c*g, c*h, d*g, d*h]


P =

[  1/2*a*e*2^(1/2)+1/2*i*b*f*2^(1/2),  1/2*a*f*2^(1/2)-1/2*i*b*e*2^(1/2), -1/2*i*a*f*2^(1/2)+1/2*b*e*2^(1/2),  1/2*i*a*e*2^(1/2)+1/2*b*f*2^(1/2)]
[  1/2*a*g*2^(1/2)+1/2*i*b*h*2^(1/2),  1/2*a*h*2^(1/2)-1/2*i*b*g*2^(1/2), -1/2*i*a*h*2^(1/2)+1/2*b*g*2^(1/2),  1/2*i*a*g*2^(1/2)+1/2*b*h*2^(1/2)]
[  1/2*c*e*2^(1/2)+1/2*i*d*f*2^(1/2),  1/2*c*f*2^(1/2)-1/2*i*d*e*2^(1/2), -1/2*i*c*f*2^(1/2)+1/2*d*e*2^(1/2),  1/2*i*c*e*2^(1/2)+1/2*d*f*2^(1/2)]
[  1/2*c*g*2^(1/2)+1/2*i*d*h*2^(1/2),  1/2*c*h*2^(1/2)-1/2*i*d*g*2^(1/2), -1/2*i*c*h*2^(1/2)+1/2*d*g*2^(1/2),  1/2*i*c*g*2^(1/2)+1/2*d*h*2^(1/2)]

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