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hytao2012

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2Â¥2014-09-26 22:34:30
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¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÒýÓûØÌû:
2Â¥: Originally posted by hytao2012 at 2014-09-26 22:34:30
ºÃÆæ¹ÖµÄÒªÇó£¬Ã÷Ã÷Ò»¾ä»°¾Í¿ÉÒÔ¡£¡£¡£

¼ÙÉèÿÄê´æxÔª£¬µÚÒ»Ä걾ϢºÍΪ1.06*xÔª£¬µÚ¶þÄ걾ϢºÍΪ1.06*x+1.06^2*xÔª£¬µÚÈýÄêΪ1.06*x+1.06^2*x+1.06^3*x£¬ÒÔ´ËÀàÍÆ£¬µÄÈ·Ò»¾ä»°¾ÍÄÜÇó½âÁË¡£

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
3Â¥2014-09-27 14:10:54
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ÒýÓûØÌû:
3Â¥: Originally posted by ´÷¸Ö¿øµÄÖíÍ· at 2014-09-27 14:10:54
¼ÙÉèÿÄê´æxÔª£¬µÚÒ»Ä걾ϢºÍΪ1.06*xÔª£¬µÚ¶þÄ걾ϢºÍΪ1.06*x+1.06^2*xÔª£¬µÚÈýÄêΪ1.06*x+1.06^2*x+1.06^3*x£¬ÒÔ´ËÀàÍÆ£¬µÄÈ·Ò»¾ä»°¾ÍÄÜÇó½âÁË¡£
...

syms x;
>> solve('x*1.06^20=1000000',x)

ans =

311804.72688608459459117025737613
4Â¥2014-09-27 19:43:38
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ÒýÓûØÌû:
4Â¥: Originally posted by ´÷ÊÀ½Ü at 2014-09-27 19:43:38
syms x;
>> solve('x*1.06^20=1000000',x)

ans =

311804.72688608459459117025737613...

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[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
5Â¥2014-09-27 19:54:47
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ÒýÓûØÌû:
4Â¥: Originally posted by ´÷ÊÀ½Ü at 2014-09-27 19:43:38
syms x;
>> solve('x*1.06^20=1000000',x)

ans =

311804.72688608459459117025737613...

Òª°´ÄãÕâÑù´æ£¬²î²»¶àÈýÄê¾Í¹»Ò»°ÙÍòÁË£¡

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
6Â¥2014-09-27 19:56:53
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zhchh008

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%%¸´Àûʽ´æ¿î£¬¼´Ã¿Äê´æÈëÏàͬÊýÁ¿µÄÇ®£¬Ö®Ç°´æÈëµÄÒ²ÊÇÀû¹öÀû£¬´ïµ½100Íò¡£
clear;
clc;
i=1;
j=20;
syms n
f=1.06^(n); %Àû¹öÀû
F=[1:20];

for i=1:j
    F(i)=symsum(f,1,j-i+1); %ÿһ±Ê´æÈëµÄÇ®µÄÉýÖµ±¶Êý
end

TF=sum(F);
N= 1e6/TF; %ÿÄêËùÐè´æÈëµÄÇ®Êý
7Â¥2014-10-10 14:31:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhchh008

½ð³æ (ÕýʽдÊÖ)

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ÒýÓûØÌû:
7Â¥: Originally posted by zhchh008 at 2014-10-10 14:31:17
%%¸´Àûʽ´æ¿î£¬¼´Ã¿Äê´æÈëÏàͬÊýÁ¿µÄÇ®£¬Ö®Ç°´æÈëµÄÒ²ÊÇÀû¹öÀû£¬´ïµ½100Íò¡£
clear;
clc;
i=1;
j=20;
syms n
f=1.06^(n); %Àû¹öÀû
F=;

for i=1:j
    F(i)=symsum(f,1,j-i+1); %ÿһ±Ê´æÈëµÄÇ®µÄÉýÖµ±¶Êý ...

N=2980.28685144756
8Â¥2014-10-10 14:31:56
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhchh008

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
8Â¥: Originally posted by zhchh008 at 2014-10-10 14:31:56
N=2980.28685144756...

·¢ÏÖÀû¹öÀûµÄÀ÷º¦Á˰ɡ£²»ÖªµÀÎÒ¼ÆËãµÄÓÐûÓдíÎó¡££º£©
9Â¥2014-10-10 14:45:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhchh008

½ð³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

ÒýÓûØÌû:
7Â¥: Originally posted by zhchh008 at 2014-10-10 14:31:17
%%¸´Àûʽ´æ¿î£¬¼´Ã¿Äê´æÈëÏàͬÊýÁ¿µÄÇ®£¬Ö®Ç°´æÈëµÄÒ²ÊÇÀû¹öÀû£¬´ïµ½100Íò¡£
clear;
clc;
i=1;
j=20;
syms n
f=1.06^(n); %Àû¹öÀû
F=;

for i=1:j
    F(i)=symsum(f,1,j-i+1); %ÿһ±Ê´æÈëµÄÇ®µÄÉýÖµ±¶Êý ...

²»ºÃÒâ˼£¬´íÁË¡£¡£ÊÇ25645.8084687278¡£¡£

F(i)=symsum(f,1,j-i+1); %ÿһ±Ê´æÈëµÄÇ®µÄÉýÖµ±¶Êý¡£¡£¡£ÐÞ¸ÄΪ
F(i)=1.06^(j-i+1);
10Â¥2014-10-10 15:03:29
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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