最近处 中间 最远处 断处
0 5000 10000 62
0 2500 5000 62
0 1250 2500 62
0 625 1250 62
0 312.5 625 62
0 156.25 312.5 62
0 78.125 156.25 62
a c b f(a) f(c) f(b)
0 5 10 -1 19 89
0 2.5 5 -1 2.75 19
0 1.25 2.5 -1 -0.6875 2.75
1.25 1.875 2.5 -0.6875 0.640625 2.75
1.25 1.5625 1.875 -0.6875 -0.12109375 0.640625
1.5625 1.71875 1.875 -0.12109375 0.2353515625 0.640625
1.5625 1.640625 1.71875 -0.12109375 0.0510253906 0.2353515625
1.5625 1.6015625 1.640625 -0.12109375 -0.0365600586 0.0510253906
1.6015625 1.62109375 1.640625 -0.0365600586 0.0068511963 0.0510253906
1.6015625 1.611328125 1.62109375 -0.0365600586 -0.0149497986 0.0068511963
1.611328125 1.616210938 1.62109375 -0.0149497986 -0.004073143 0.0068511963
1.616210938 1.618652344 1.62109375 -0.004073143 0.0013830662 0.0068511963
1.616210938 1.617431641 1.618652344 -0.004073143 -0.0013465285 0.0013830662
1.617431641 1.618041992 1.618652344 -0.0013465285 0.0000178963 0.0013830662
1.617431641 1.617736816 1.618041992 -0.0013465285 -0.0006644093 0.0000178963
1.617736816 1.617889404 1.618041992 -0.0006644093 -0.0003232798 0.0000178963
1.617889404 1.617965698 1.618041992 -0.0003232798 -0.0001526976 0.0000178963
1.617965698 1.618003845 1.618041992 -0.0001526976 -0.0000674021 0.0000178963
1.618003845 1.618022919 1.618041992 -0.0000674021 -0.0000247533 0.0000178963
1.618022919 1.618032455 1.618041992 -0.0000247533 -0.0000034286 0.0000178963
1.618032455 1.618037224 1.618041992 -0.0000034286 0.0000072338 0.0000178963
1.618032455 1.61803484 1.618037224 -0.0000034286 0.0000019026 0.0000072338
1.618032455 1.618033648 1.61803484 -0.0000034286 -0.000000763 0.0000019026
x f(x)
-2 -8.0000000
-1.995 -8.0149750
-1.99 -8.0299000
