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¸÷λ´óϺ£¬ÎÒÄÜ·ñÈç϶¨Òå·ûºÅº¯Êý£¿Èç¿ÉÒÔ£¬ÇëÎÊÎÒ¸ÃÔõÑùµ÷ÓÃËü? ÎÒÔÚ@symÎļþ϶¨ÒåÁËÒ»¸ö·ûºÅº¯Êý£¬ÊµÏÖ¹¦ÄÜ: alpha^2>0 beta^2>0ʱlamda1=1 alpha^2<0 beta^2>0ʱlamda1=-1 alpha^2<0 beta^2<0ʱlamda1=-1 ³ÌÐò£º function l1=lamda1(alpha,beta) %LAMDA1 the symbolic funtion %This function accepts two sym %as the input argument syms l1 if isequal(alpha^2/abs(alpha^2),sym(1)) & isequal(beta^2/abs(beta^2),sym(1)) l1=1; end if isequal(alpha^2/abs(alpha^2),sym(-1)) & isequal(beta^2/abs(beta^2),sym(1)) l1=-1; end if isequal(alpha^2/abs(alpha^2),sym(-1)) & isequal(beta^2/abs(beta^2),sym(-1)) l1=-1; end |
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