ժҪϾ\ٹ·зϵػij]ɫVerhulstģ^AģͣԷAĿ
ؼʣϵػճɫVerhulstģ
1.
Ͼ\ٹ·λϾݠݹ̿ϣֲEͬxϵػʩ֮4ԏ۲㣬ֱڽ^y·ՄϵػӰ칫·ơȫʹõҪءСճСД·NJ^ȫʹõҪ䓮һڹ¼ϵػ·SһáʮMϵꐼϵػ׃ļҲʮָӡ
õ¹WVerhulstķַ̣ʽ1·Aģ͡
dpt/dt=apt-bp2t1
ʽptķֳ
·ϵػr仯ʵstһƷs]Verhulstģߡ
2. ɫVerhulstģͽģ
ԭʼx0i i=12n
1Jɵx1i=ik=1x0k i=12n
2BYN
B=12x11+x12-14x11+x122
12x12+x13-14x12+x132
12x1n-1+x1n-14x1n-1+x1n2
Y=x02
x03
x0n
3С˼ab=BT.B-1.BT.Y
4ģ
ϵabʽ1̵ַã
t=1x11=x01
x1t=ab1+ab.1x01-1.e-at-1
Jеģ͡YģDֵɵ߾Verhulstģߡ
3. Թ·ϵػVerhulstģ
3.1 ԭʼ~Ĵ
xͬrԑijsԭʼnJ·ϵػֱr̵ijs.
1k 54+655۲Ĺ۲~λcm
Q123456SI250301030103SI2528293.23336Q789101112SI030702038002002SI39464851852522עһԭJƳ28 cm.
3.2
1Ͼ\·k 54+655ÿ۲SISI1ι۲r1999430գ12ι۲r19991015գÿμ¡
ԭʼx1i=si i=12n
1Jɵx1i=ik=1x0k i=12n
2BYN
B=265 -7022 501
285 -8122 499
305 -9302 498
325 -10562 5
345 -11902 5
375 -14062 5
425 -180625
470 -22089 9
499 -24900 1
519 -26936 1
521 -27144 1YN=03
01
03
01
03
03
07
02
038
002
002
3ģ
x1t=6547 681+1619 152.e-0174 040 7t-1
·2002420024СƽѦ·ϵػA\۱2k 54+655۲ֵģֵλcm
Q123456۲ֵ560570600610640670ģֵ557586614642670697%054281233525469403Q7891011۲ֵ740760798800802ģֵ722746769789806%243184363138050f2ģ͵϶ܸߵģù·ϵػsAģ͡
4·ϵػճ_
ݱ1ɵù·ϵػSIr\仯uAĻɫģͣtrģDֵԂޣϡnճ壬O·ϵػճrճs=952 cm.
3.3
ԂՄԭֹRʴ_͡ģƼRԟˣģqݵijʵּȷ١ģ飻D֙桢ģ飻ģ飻ģͼģ飻۲ֵģDֵģxֵģ飻ģ늡ԭʼСȹ۲õLh
4.
Ͼ\ٹ·зϵػrϵ]ɫVerhulstģģ¼衣ՊȶrõĹ۲ݿֱʹø÷A⡣⛄õ^ݣȶ~ԓԤ⡣CģֻٵĹ۲|һҪ5Ϳɽģõr̵ijֵGC۲r?
οף
1飬㪱ػĻɫA⪱̿죬19982
2~˾ɫϵy人ѧ磬1988