| ²é¿´: 384 | »Ø¸´: 7 | |||
| µ±Ç°Ö÷ÌâÒѾ´æµµ¡£ | |||
| µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû | |||
[½»Á÷]
Ö¸ÊýÇúÏߵķ½³ÌÔõôÔÚͼÐÎÉϽâÊÍÄØ£¿
|
|||
|
µÃµ½Ò»¸öyÓëXµÄÖ¸ÊýÇúÏߣ¬·½³ÌÊÇ£º y=a*e^(b*x) ÆäÖУ¬eÊÇ×ÔÈ»¶ÔÊý¡£ ÇëÎÊ£¬aºÍbÔÚͼÐÎÉϵĽâÊÍÊÇʲô£¿ ¼´ aÔ½´ó£¬ÇúÏßͼÐλáÔõôÑù£¿ bÔ½´ó£¬ÇúÏßͼÐλáÔõôÑù£¿ лл |
» ²ÂÄãϲ»¶
Óб¬ÁÏ£¬Ò»¸öÇàÄê½ÌʦÂô·¿µÃ400Íò£¬È»ºó»»ÁËÒ»¸öËÄÇàñ×Ó
ÒѾÓÐ3È˻ظ´
»¯Ñ§¹¤³Ìµ÷¼Á289
ÒѾÓÐ28È˻ظ´
328Çóµ÷¼Á
ÒѾÓÐ17È˻ظ´
²ÄÁÏÀà284µ÷¼Á
ÒѾÓÐ7È˻ظ´
334Çóµ÷¼Á
ÒѾÓÐ8È˻ظ´
085600²ÄÁÏÓ뻯¹¤×¨Ë¶329 Çóµ÷¼Á
ÒѾÓÐ22È˻ظ´
070300»¯Ñ§279Çóµ÷¼Á
ÒѾÓÐ9È˻ظ´
ÍÁľˮÀûר˶276·ÖÇóµ÷¼Á
ÒѾÓÐ9È˻ظ´
331Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
²ÄÁÏÓ뻯¹¤×¨Ë¶306·ÖÕÒºÏÊʵ÷¼Á
ÒѾÓÐ24È˻ظ´
4Â¥2009-09-24 01:44:22
2Â¥2009-09-23 22:57:24
3Â¥2009-09-24 00:16:48
"a" determines the curve position along the y-axis and
¡ï ¡ï ¡ï
cherry6(½ð±Ò+3,VIP+0):tks a lot! 9-24 08:11
cherry6(½ð±Ò+3,VIP+0):tks a lot! 9-24 08:11
|
also the orientation of curve opening (upward (a>0) or downward (a<0)) "b" determines the distance between the y axis and the half of the curve (which goes to infinite) |
5Â¥2009-09-24 07:41:11














»Ø¸´´ËÂ¥