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zhangguangping: ½ð±Ò+2, ллָµ¼£¡ 2012-04-17 19:08:42
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[x,y,z]=solve('(x+2)*z/((x+2)^2+y^2)-3','y/(y^2+(x+1)^2)-2','x*z/(x^2+y^2)-1')
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