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syms K0 K1 K2 K3 beta0 k0 n0 n1 n2 n3

k0=2*pi/0.88;
n0=3.4;
n1=3.6;
n2=3.4;
n3=3.55;
[K0 K1 K2 K3 beta0]=solve('K0^2=k0^2*n0^2-beta0^2','K1^2=k0^2*n1^2-beta0^2','K2^2=k0^2*n2^2-beta0^2','K3^2=k0^2*n3^2-beta0^2',...
    '(K1^2*K2*K3^2+K0*K3^4+K0*K1^2*K2^2+K0^2*K2*K3^2)*(tan(K3*0.2))^2=K3^2*(K0^2*K2+K0*K2^2+K0*K1^2+K1^2*K2)','K0','K1','K2','K3','beta0')
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[ Last edited by wh1125 on 2013-9-26 at 09:22 ]
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wh1125

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4Â¥: Originally posted by dingd at 2013-09-26 16:12:27
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2Â¥: Originally posted by lihongyu0526 at 2013-09-26 14:46:02
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wh1125: ½ð±Ò+2, ¡ïÓаïÖú, ûÓнâ¾öÎÒµÄÎÊÌâ 2013-09-26 17:41:38
ben_ladeng: ½ð±Ò+1, ¸Ðл²ÎÓë 2013-09-26 19:13:25
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beta0: 23.2021994252868
k1: -11.0612145738144
k2: -7.13998330841327
k3: -10.2041827740037
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