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A=[1 2 3 ;4 5 6;besselj(1,x) 8 9];
det(A)
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6Â¥: Originally posted by ÔÂÖ»À¶ at 2015-02-06 15:29:01
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7Â¥2015-02-06 22:56:39
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solve(det(A))

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2Â¥2015-02-04 20:22:55
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µÂÂê¸øÎÒ: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú 2015-02-04 21:59:42
ÒÔ¾ØÕóA=[-2 1 3 ;3 1 7;besselj(1,x) 2 9]ΪÀý£¬´úÂëÈçÏ£¨ÒÔÏ´úÂëÐèÍêÈ«¸´ÖƽøÒ»¸öн¨µÄmÎļþÖУ¬ÔËÐм´¿É£©£º
CODE:
function solve_nonlq
clear all;clc
x0=2;
options=optimset('TolFun',1e-9,'TolX',1e-9, 'MaxIter',500,'MaxFunEvals',1000);
[x fval]=fsolve(@obj,x0,options)


function y=obj(x)
A=[-2 1 3 ;3 1 7;besselj(1,x) 2 9];
y=det(A);

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x =

    4.5732


·½³Ì²Ð²îfval =

  2.2594e-010
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