±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 3145  |  »Ø¸´: 11
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

liuze2125051

ľ³æ (ÖøÃûдÊÖ)

[ÇóÖú] ±ÈÖµÎó²îÈçºÎ¼ÆËã ÒÑÓÐ1È˲ÎÓë

ÓÐX YÁ½¸öÊý£¬ËûÃǵÄÖµ·Ö±ðΪa,b£¬ËüÃǵÄÎó²î·Ö±ðΪpºÍq
ÇëÎÊX/Y ËüµÄÎó²îÔõô¼ÆËã
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lisaloff

½ð³æ (³õÈëÎÄ̳)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
liuze2125051: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ÔÙ´ÎËͽð±Ò £º£© 2015-08-17 07:29:31
ÒýÓûØÌû:
4Â¥: Originally posted by liuze2125051 at 2015-08-16 11:16:51
Çë½ÌһϠΪʲôuxºÍuy·Ö±ðÊÇpºÍqÄØ£¬pºÍq²»ÊÇÎó²îô Ϊʲô³ÉÁËxºÍyµÄ΢·Ö...

uxÕâÀïÊÇÖ¸µÄÊÇxµÄÎó²îuncertainty,ºóÃæÎÒд×÷u(x)°É, Õâ¸ö¹ý³ÌҲȷʵÊÇ´ÓÆ«Î¢·ÖÍÆµ¼³öÀ´µÄ¼òµ¥¹À²â·½·¨£¬¿¼ÂǵÄÊÇÆ½¾ùÎó²î£ºu(x/y)/(x/y)=u(x)/x+u(y)/y
»¹ÓÐÒ»ÖÖ¼ÆËã·½·¨£¬Í¨³£»áµÃµ½Ò»¸öÏà¶ÔСµÄÎó²î¹ÀËãÖµ£º
u(x/y)/(x/y)=sqrt(  (u(x)/x)^2  +  (u(y)/y)^2  )
Ò»°ãÇé¿öϾÍÕâÁ½ÖÖ¼ÆËã·½·¨
6Â¥2015-08-16 17:51:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 12 ¸ö»Ø´ð

ͨÌì·

°æÖ÷ (ÖøÃûдÊÖ)

²»Çå³þ
X/Y=a¡Àp/b¡Àq
×î´óΪa+p/b-q
×îСΪA-p/b+q
2Â¥2015-08-15 19:32:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lisaloff

½ð³æ (³õÈëÎÄ̳)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
liuze2125051: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-08-16 11:16:02
Â¥Ö÷Ëù˵µÄÇé¿ö£¬¼òµ¥µÄ·½·¨¿ÉÒÔÈçϼÆË㣺
u(x/y)=(ux/x+uy/y)*x/y
        =ux/y+uy*x/y^2
        =p/b+q*a/b^2
3Â¥2015-08-15 22:14:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

liuze2125051

ľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
3Â¥: Originally posted by lisaloff at 2015-08-15 22:14:47
Â¥Ö÷Ëù˵µÄÇé¿ö£¬¼òµ¥µÄ·½·¨¿ÉÒÔÈçϼÆË㣺
u(x/y)=(ux/x+uy/y)*x/y
        =ux/y+uy*x/y^2
        =p/b+q*a/b^2

Çë½ÌһϠΪʲôuxºÍuy·Ö±ðÊÇpºÍqÄØ£¬pºÍq²»ÊÇÎó²îô Ϊʲô³ÉÁËxºÍyµÄ΢·Ö
4Â¥2015-08-16 11:16:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 307Çóµ÷¼Á +8 ³¬¼¶ÒÁ°º´óÍõ 2026-03-24 8/400 2026-03-27 11:23 by leaiy
[¿¼ÑÐ] Ò»Ö¾Ô¸Ö£´ó085600£¬310·ÖÇóµ÷¼Á +5 Àîäì¿É 2026-03-26 5/250 2026-03-27 11:14 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] °²»Õ´óѧר˶ÉúÎïÓëҽҩרҵ(086000)324·Ö£¬Ó¢ÓïÒѹýËÄÁù¼¶£¬Áù¼¶521£¬Çóµ÷¼Á +3 ÃÀζ¿ÉÀÖ¼¦³á 2026-03-26 3/150 2026-03-27 08:46 by hxsm
[¿¼ÑÐ] 292Çóµ÷¼Á +11 ¶ì¶ì¶ì¶î¶î¶î¶î¶ 2026-03-25 12/600 2026-03-27 08:45 by Delta2012
[¿¼ÑÐ] Çóµ÷¼Á +6 ÁÖ֮Ϧ 2026-03-24 6/300 2026-03-27 08:38 by hypershenger
[¿¼ÑÐ] 081200-11408-276ѧ˶Çóµ÷¼Á +4 ´Þwj 2026-03-26 4/200 2026-03-27 08:04 by chemisry
[¿¼ÑÐ] 286Çóµ÷¼Á +5 PolarBear11 2026-03-26 5/250 2026-03-26 23:59 by ÔËÆøyunqi
[¿¼ÑÐ] 321Çóµ÷¼Á +6 Ymlll 2026-03-24 6/300 2026-03-26 20:50 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] ×Ü·Ö322ÇóÉúÎïѧ/Éú»¯Óë·Ö×Ó/ÉúÎïÐÅϢѧÏà¹Øµ÷¼Á +5 ÐdzÁuu 2026-03-26 6/300 2026-03-26 19:02 by macy2011
[¿¼ÑÐ] ¿¼Ñе÷¼Á +6 À´ºÃÔËÀ´À´À´ 2026-03-21 7/350 2026-03-25 22:43 by 418490947
[¿¼ÑÐ] 290·Öµ÷¼ÁÇóÖú +3 ¼ªÏéÖ¹Ö¹³Â 2026-03-25 3/150 2026-03-25 19:58 by barlinike
[¿¼ÑÐ] ²ÄÁÏר˶ 335 ·ÖÇóµ÷¼Á +4 ¾Ü¾øÀ䱩Á¦ 2026-03-25 4/200 2026-03-25 18:45 by haxia
[¿¼ÑÐ] 26¿¼ÑÐ-291·Ö-ÏÃÃÅ´óѧ£¨085601£©-ÈáÐÔµç×ÓѧԺ²ÄÁϹ¤³ÌרҵÇóµ÷¼Á +3 min3 2026-03-24 4/200 2026-03-25 18:22 by xcjcqu
[¿¼ÑÐ] 086003ʳƷ¹¤³ÌÇóµ÷¼Á +6 íµíµ111 2026-03-24 6/300 2026-03-25 10:29 by 3Strings
[¿¼ÑÐ] ²ÄÁÏѧÇóµ÷¼Á +6 Stella_Yao 2026-03-20 6/300 2026-03-25 00:37 by baoball
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϺ½²ÄÁÏר317·ÖÇóµ÷¼Á +5 ըѽըѽըÊíÌõ 2026-03-23 5/250 2026-03-24 16:52 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] Çóµ÷¼ÁÒ»Ö¾Ô¸Î人Àí¹¤´óѧ²ÄÁϹ¤³Ì£¨085601£© +5 WW.' 2026-03-23 7/350 2026-03-24 14:50 by sprinining
[¿¼ÑÐ] 315·Ö£¬³ÏÇóµ÷¼Á£¬²ÄÁÏÓ뻯¹¤085600 +3 13756423260 2026-03-22 3/150 2026-03-22 20:11 by edmund7
[¿¼ÑÐ] Ò»Ö¾Ô¸Éî´ó£¬0703»¯Ñ§£¬×Ü·Ö302£¬Çóµ÷¼Á +4 ÆßÔÂ-ÆßÆß 2026-03-21 4/200 2026-03-21 18:20 by ѧԱ8dgXkO
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄÏÀí¹¤085701»·¾³302Çóµ÷¼ÁԺУ +3 ¿ûè÷ÎÀ¶Ó 2026-03-20 3/150 2026-03-20 19:28 by zhukairuo
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û