Znn3bq.jpeg
ÉÇÍ·´óѧº£Ñó¿ÆÑ§½ÓÊܵ÷¼Á
²é¿´: 724  |  »Ø¸´: 5

fangyuhua

Òø³æ (СÓÐÃûÆø)

[ÇóÖú] »¯Ñ§¹·ÇóÖúÇóÁ½ÏßΨһ½»µã ÒÑÓÐ2È˲ÎÓë

»¯Ñ§¹·²»»áÓø÷ÖÖÊýѧÈí¼þËùÒÔÖ»ÄÜÔÚÕâÀïÇóÖúÁË
y=x+a
y=0.0701ln(x)+0.6429

ÇóÕâÁ½ÌõÏßµÄΨһ½»µãµÄx y ÕýÖµ

ллÁË£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fangyuhua

Òø³æ (СÓÐÃûÆø)

ÌâÄ¿¸ÄһϠֱÏß·½³ÌÊÇ100y=x+a
2Â¥2015-09-01 09:36:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
fangyuhua: ½ð±Ò+5 2015-09-03 07:26:38
È¡ÇÐÏßÇé¿ö!
Çеãx=7.01
>> x=100*0.0701
x =
    7.0100
>> y=0.0701*log(x)+0.6429
y =
    0.7794
>> a=100*y-x
a =
   70.9308
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
3Â¥2015-09-01 10:57:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

peterflyer

ľ³æÖ®Íõ (ÎÄѧ̩¶·)

peterflyer


¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
fangyuhua: ½ð±Ò+5 2015-09-03 07:26:43
ÒýÓûØÌû:
2Â¥: Originally posted by fangyuhua at 2015-09-01 09:36:38
ÌâÄ¿¸ÄһϠֱÏß·½³ÌÊÇ100y=x+a

y=0.0701ln(x)+0.6429
100y=x+a
0.01*x+0.01*a=0.0701*lnx+0.6429
ÁîF(x)=0.01*x+0.01*a-0.0701*lnx-0.6429
F'(x)=0.01-0.0701/x
ÁîF ¡®(x)=0½âµÃפµã×ø±ê x=7.01
F''(x)=0.0701/x^2
¹Êפµã´¦FÈ¡µÃ×îСֵ£¬Îª:
Fmin=0.0701+0.01*a-0.0701*ln7.01-0.6429
       ¡Ö-0.709308+0.01*a
ÈôÁ½ÌõÏßÖ»ÓÐΨһµÄ½»µã£¬Ôò˵Ã÷£ºFmin¡Ô0
´úÈëÉÏʽµÃ£ºa=70.9308
4Â¥2015-09-01 14:55:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fangyuhua

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by peterflyer at 2015-09-01 14:55:32
y=0.0701ln(x)+0.6429
100y=x+a
0.01*x+0.01*a=0.0701*lnx+0.6429
ÁîF(x)=0.01*x+0.01*a-0.0701*lnx-0.6429
F'(x)=0.01-0.0701/x
ÁîF ¡®(x)=0½âµÃפµã×ø±ê x=7.01
F''(x)=0.0701/x^2
¹Êפµã´¦FÈ¡µÃ×îСֵ£¬ ...

лл£¡ÊýѧÔü·Ç³£¸Ð¼¤
5Â¥2015-09-03 07:27:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fangyuhua

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
3Â¥: Originally posted by wurongjun at 2015-09-01 10:57:34
È¡ÇÐÏßÇé¿ö!
Çеãx=7.01
>> x=100*0.0701
x =
    7.0100
>> y=0.0701*log(x)+0.6429
y =
    0.7794
>> a=100*y-x
a =
   70.9308

лл°ïæ½â´ð¡£ ÊýѧÔü±íʾ·Ç³£¸Ð¼¤
6Â¥2015-09-03 07:27:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ fangyuhua µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] ɽ¶«Ê¡»ù½ð2026 +6 jerry681 2026-04-08 7/350 2026-04-14 10:08 by î¿Ë×
[¿¼ÑÐ] 293Çóµ÷¼Á +16 ÎÒ°®¸ßÊý¸ßÊý°®Î 2026-04-12 18/900 2026-04-13 21:47 by ѧԱJpLReM
[¿¼ÑÐ] »¯Ñ§070300 Çóµ÷¼Á +21 ¹þ¹þ¹þ^_^ 2026-04-12 21/1050 2026-04-13 21:36 by nxybio2007
[¿¼ÑÐ] Ò»Ö¾Ô¸»ª¹¤085600 331·Ö +7 ÌìÏÂww 2026-04-09 7/350 2026-04-13 09:01 by lhj2009
[¿¼ÑÐ] 368»¯Ñ§Çóµ÷¼Á +14 wwwwabcde 2026-04-07 15/750 2026-04-13 08:36 by lhj2009
[¿¼ÑÐ] 295·ÖÇóµ÷¼Á +13 ?ÒªÉϰ¶? 2026-04-10 13/650 2026-04-12 15:37 by laoshidan
[¿¼ÑÐ] 086000µ÷¼Á +6 Ê®Æßsa 2026-04-07 6/300 2026-04-12 11:05 by ´óÁ¦Ë®ÊÖÁ¦´óÎÞÇ
[¿¼ÑÐ] 326Çóµ÷¼Á +6 Shansyn 2026-04-10 6/300 2026-04-12 09:46 by hammer3
[¿¼ÑÐ] 291Çóµ÷¼Á +8 ¹ØÒä±±. 2026-04-11 8/400 2026-04-12 09:32 by ÄæË®³Ë·ç
[¿¼ÑÐ] 086003µ÷¼ÁÇóÖú +21 ËÕß®Íò 2026-04-09 22/1100 2026-04-11 20:25 by dongdian1
[¿¼ÑÐ] 11408¡£358Çóµ÷¼Á +3 TMYzds 2026-04-07 3/150 2026-04-11 17:10 by µªÆøÆøÆø
[¿¼ÑÐ] 346£¬¹¤¿ÆÇóµ÷¼Á +3 moser233 2026-04-09 3/150 2026-04-11 10:04 by zhq0425
[¿¼ÑÐ] µ÷¼Á »¯Ñ§ 307 +21 73372112 2026-04-09 23/1150 2026-04-10 23:53 by wj165256
[¿¼ÑÐ] ²ÄÁÏÀà284µ÷¼Á +40 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 48/2400 2026-04-10 23:28 by 314126402
[¿¼ÑÐ] 314Çóµ÷¼Á +18 xhhdjdjsjks 2026-04-09 19/950 2026-04-10 18:53 by HPUCZ
[¿¼ÑÐ] 282£¬µçÆø¹¤³Ìרҵ£¬Çóµ÷¼Á£¬²»Ìôרҵ +9 jggshjkkm 2026-04-10 9/450 2026-04-10 14:55 by ÄæË®³Ë·ç
[¿¼ÑÐ] 085404£¬285·ÖÇóµ÷¼Á +12 Þ±Þ±¿¼ÑÐ 2026-04-07 14/700 2026-04-09 23:10 by parmtree
[ÂÛÎÄͶ¸å] ÇóÖúÎÄÏ×Ô­ÎÄ 10+3 18500821399 2026-04-08 3/150 2026-04-09 16:56 by ±±¾©À³ÒðÈóÉ«
[¿¼ÑÐ] 296Çóµ÷¼Á +3 Íô£¡£¿£¡ 2026-04-08 3/150 2026-04-08 22:00 by zhouyuwinner
[¿¼ÑÐ] Çó¿¼ÑвÄÁϵ÷¼Á +3 ²Ä»¯Àî¿É 2026-04-07 3/150 2026-04-08 00:21 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û