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zzb1988

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[ÇóÖú] "ploylog()"MATLABÇó½Ì£¡£¡£¡

ÔÚMATLABÖмÆËã»ý·ÖºóµÃ³öf =

-1/5*t^5+t^4*log(1-exp(t))+4*t^3*polylog(2,exp(t))-12*t^2*polylog(3,exp(t))+24*t*polylog(4,exp(t))-24*polylog(5,exp(t))+24*zeta(5)
Ïë»­³öÕâÇúÏߣ¬¿ÉÊÇpolylog()˵ÊÇÎÞ·¨Ê¶±ðµÄ±í´ïʽ£¬Çó½Ì£¬Õâ¸öploylogÊÇʲôÒâ˼£¿
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csgt0

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¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
polylogÊÇmupadÀïµÄ£¬Ê¹ÓÃevalinµ÷ÓÃ

clear
clc
syms t
f=evalin(symengine,'polylog(2,t)')
t=0.5:0.01:1;
y=subs(f);
plot(t,y)
showmethemoney
2Â¥2012-05-23 10:55:59
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

clear
clc
syms t
f =-1/5*t^5+t^4*log(1-exp(t))+4*t^3*evalin(symengine,'polylog(2,exp(t))')-12*t^2*evalin(symengine,'polylog(3,exp(t))')...
    +24*t*evalin(symengine,'polylog(4,exp(t))')-24*evalin(symengine,'polylog(5,exp(t))')+24*zeta(5)

%f=evalin(symengine,'polylog(2,exp(t))')
t=0.01:0.01:1;
y=subs(f);
plot(t,y)
showmethemoney
3Â¥2012-05-23 10:58:23
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zzb1988

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
3Â¥: Originally posted by csgt0 at 2012-05-23 10:58:23
clear
clc
syms t
f =-1/5*t^5+t^4*log(1-exp(t))+4*t^3*evalin(symengine,'polylog(2,exp(t))')-12*t^2*evalin(symengine,'polylog(3,exp(t))')...
    +24*t*evalin(symengine,'polylog(4,exp(t))')-24*evali ...

ÄãÓõÄÊÇÄĸö°æ±¾µÄ£¿
¡°Undefined function or variable 'symengine'.¡±
4Â¥2012-05-25 15:59:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

ÎÒµÄ2011b
showmethemoney
5Â¥2012-05-25 16:27:20
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

ÓÃÕâ¸öÊÔÊÔmaple('polylog(2,exp(t))')

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

showmethemoney
6Â¥2012-05-25 16:32:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zzb1988

гæ (³õÈëÎÄ̳)

ËÍÏÊ»¨Ò»¶ä
ÒýÓûØÌû:
6Â¥: Originally posted by csgt0 at 2012-05-25 16:32:55
ÓÃÕâ¸öÊÔÊÔmaple('polylog(2,exp(t))')

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7Â¥2012-05-25 17:02:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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