解方程的二分法 matlab 程序

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解方程的二分法  matlab 程序  （ x^3-3*x^2+6*x-1=0）
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5 h; @1 \4 S5 H# i9 v  B9 t0 @% Bisection.m
7 x; ~6 s) S6 Q4 N: N3 {; lfunction[k,x,f_value]=Bisection(f,a,b,eps1,eps2,N)
fprintf('k ,a ,b ,x, f\n')
for k=1:N
5 F+ y' j# \  ?/ L2 K    x=(a+b)/2;
    f_value=f(x);
    fprintf( '%3d, %10.9f, %10.9f, %10.9f,%10.9f,\n'...
      ,k ,a ,b ,x, f_value)
    if abs(f_value)< eps1||0.5*(b-a)<eps2
    return
4 t0 _  p, ]* F7 f3 J; c! |    else
1 i- V+ o& `$ I        if f(x)*f(a)<0
5 Z4 l1 ]9 _; R7 j4 L! t          b=x;
8 k) c6 O3 _* r( \2 m% v        else
/ K' |) [8 u* `          a=x;
        end
        if k== N
          warning ('算法超出最大迭代数!')   
        end
    end
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% examlpe7.m
% Y2 f" G, p7 |- E& ^8 T: t3 ta=0; b=1;
eps1=1e-4;eps2=1e-4;
- h$ F' D* ]; b' b  n* S, C N=300;
f=@ (x) (x^3-3*x^2+6*x-1);
Hfun=@Bisection;
9 O5 X/ t' E! u1 p7 Q[k,x,f_value]= feval(Hfun, f,a,b,eps1,eps2,N);

4 D* q& _1 r! t* g运行结果
5 l  ]/ \( g; P>> examlpe7
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  1, 0.000000000, 1.000000000, 0.500000000,1.375000000,
5 ]2 u  Y) ~) d2 H) R( n9 O8 D  2, 0.000000000, 0.500000000, 0.250000000,0.328125000,
  3, 0.000000000, 0.250000000, 0.125000000,-0.294921875,
0 a, I+ N$ f2 J4 d7 V& o' Q; z  4, 0.125000000, 0.250000000, 0.187500000,0.026123047,
0 X9 \& K' i: P8 B3 e  5, 0.125000000, 0.187500000, 0.156250000,-0.131927490,
  6, 0.156250000, 0.187500000, 0.171875000,-0.052295685,
+ h& y( n' ~6 Y" y; I0 F0 C$ I" b  7, 0.171875000, 0.187500000, 0.179687500,-0.012936115,
  8, 0.179687500, 0.187500000, 0.183593750,0.006630838,
  9, 0.179687500, 0.183593750, 0.181640625,-0.003143273,
# A( R, X& o1 o, P6 q, V' c$ v 10, 0.181640625, 0.183593750, 0.182617188,0.001746121,
8 ?; K6 g* @1 e9 t+ e 11, 0.181640625, 0.182617188, 0.182128906,-0.000697991,
12, 0.182128906, 0.182617188, 0.182373047,0.000524211,
' {& U/ ^* ~# t 13, 0.182128906, 0.182373047, 0.182250977,-0.000086854,
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