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zhaoliang270

Ìú¸Ëľ³æ (ÕýʽдÊÖ)

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wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

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zhaoliang270: ½ð±Ò+15, ¡ï¡ï¡ïºÜÓаïÖú, ºÜÓаïÖú 2015-05-13 19:52:18
ÓÃMATLABËãÒ»ÏÂ!
>> syms a b x
>> int(1/(a*x^4+b)^2,x,0,1)
ans =
1/32*(8*b+3*(b/a)^(1/4)*2^(1/2)*log(-(1+(b/a)^(1/4)*2^(1/2)+(b/a)^(1/2))/(-(b/a)^(1/2)-1+(b/a)^(1/4)*2^(1/2)))*a+3*(b/a)^(1/4)*2^(1/2)*log(-(1+(b/a)^(1/4)*2^(1/2)+(b/a)^(1/2))/(-(b/a)^(1/2)-1+(b/a)^(1/4)*2^(1/2)))*b+6*(b/a)^(1/4)*2^(1/2)*atan((2^(1/2)+(b/a)^(1/4))/(b/a)^(1/4))*a+6*(b/a)^(1/4)*2^(1/2)*atan((2^(1/2)+(b/a)^(1/4))/(b/a)^(1/4))*b+6*(b/a)^(1/4)*2^(1/2)*atan((2^(1/2)-(b/a)^(1/4))/(b/a)^(1/4))*a+6*(b/a)^(1/4)*2^(1/2)*atan((2^(1/2)-(b/a)^(1/4))/(b/a)^(1/4))*b)/b^2/(a+b)
>>
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
2Â¥2015-05-12 23:11:03
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
pippi6: ½ð±Ò+10, ¸»ÓнÌѧÐÍ 2015-05-13 21:31:33
zhaoliang270(feixiaolin´ú·¢): ½ð±Ò+5 2015-05-14 23:16:12
ÒýÓûØÌû:
2Â¥: Originally posted by wurongjun at 2015-05-12 23:11:03
ÓÃMATLABËãÒ»ÏÂ!
>> syms a b x
>> int(1/(a*x^4+b)^2,x,0,1)
ans =
1/32*(8*b+3*(b/a)^(1/4)*2^(1/2)*log(-(1+(b/a)^(1/4)*2^(1/2)+(b/a)^(1/2))/(-(b/a)^(1/2)-1+(b/a)^(1/4)*2^(1/2)))*a+3*(b/a ...

Wurongjunר¼ÒÒѾ­ÓÐÇåÎúÍ걸µÄ½â´ð, ÎÒÀ´»­ÉßÌí×ãÒ»ÏÂ.
Èç¹ûÈÃ, ÄÇôԭÀ´¶¨»ý·ÖµÈÓÚ (y=cx)
.

Õâ¸ö±»»ýº¯ÊýµÄÔ­º¯Êý¼ûͼ, ÄãÒ²¿ÉÒÔÖ±½ÓÑéÖ¤ ij¸öº¯ÊýÇóµ¼µÈÓÚ±»»ýʽ.
ÇóÖúÈçºÎ¼ÆËãÒ»¸ö¶¨»ý·Ö
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ÇóÖúÈçºÎ¼ÆËãÒ»¸ö¶¨»ý·Ö-1
derivative.png

We_must_know. We_will_know.
3Â¥2015-05-13 01:26:16
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dapinmin

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

ÊDz»ÊÇ¿ÉÒÔ³¢ÊÔÓÃÊýѧÊÖ²áµÄ»ý·Ö±íÀ´²éÕÒ£¿
4Â¥2015-05-13 02:56:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Edstrayer

°æÖ÷ (ÖøÃûдÊÖ)

·½´ç¶·ÊÒСÌìµØÕýÆøÃÔÂþ´óÊÀ½ç

ÓÐÀíº¯ÊýµÄ»ý·Ö£¬»¯³É²¿·Ö·Öʽ¼ÆËã
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5Â¥2015-05-13 03:25:21
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peterflyer

ľ³æÖ®Íõ (ÎÄѧ̩¶·)

peterflyer


¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
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zhaoliang270: ½ð±Ò+5 2015-05-14 08:24:46
ÎÒÌá¸ö×µÄµ«Ò²×îÈÝÒ×Àí½âµÄ½âÌâÏë·¨£¬Ò²²»Öª¶Ô²»¶Ô¡£¾ÍÊÇÏÈÁîa*x^4+b=0£¬½â³öËĸö¸ùx1¡¢x2¡¢x3¡¢x4¡£ÔÙÓôý¶¨ÏµÊý·¨½«±»»ý·Öʽ·Ö½âΪÊý¸öÐÎÈçp/(x-q)^2ºÍp/(x-q)µÄÐÎʽµÄºÍ²¢Çó³ö¸÷¸öpºÍqµÄÖµ£¨¹²¸÷ÓÐËĸö²»Í¬µÄpºÍq£¬p¡¢q¾ùΪ¸´Êý£©¡£ÓÉÓÚ¸÷¸ö¸´ÊýÊdzɶԹ²éîµÄ£¬×îºó¾­¹ý¸´±äº¯Êý¼ÆËãµÄ´¦Àí£¬¾ÍÄܹ»µÃµ½ÊµÊýÐÎʽµÄº¯Êý¡£È»ºó¼´¿ÉÇó³öÔ­±»»ýº¯ÊýµÄ²»¶¨»ý·ÖÀ´£¬×îºóÔÙ´úÈë»ý·ÖÉÏÏÂÏÞ¼´¿ÉÇóµÃ¶¨»ý·ÖµÄÖµ¡£
6Â¥2015-05-13 20:55:55
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zhaoliang270

Ìú¸Ëľ³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
6Â¥: Originally posted by peterflyer at 2015-05-13 20:55:55
ÎÒÌá¸ö×µÄµ«Ò²×îÈÝÒ×Àí½âµÄ½âÌâÏë·¨£¬Ò²²»Öª¶Ô²»¶Ô¡£¾ÍÊÇÏÈÁîa*x^4+b=0£¬½â³öËĸö¸ùx1¡¢x2¡¢x3¡¢x4¡£ÔÙÓôý¶¨ÏµÊý·¨½«±»»ý·Öʽ·Ö½âΪÊý¸öÐÎÈçp/(x-q)^2ºÍp/(x-q)µÄÐÎʽµÄºÍ²¢Çó³ö¸÷¸öpºÍqµÄÖµ£¨¹²¸÷ÓÐËĸö²»Í¬µÄ ...

Õâ¸ö·½·¨¾ßÓÐÆÕÊÊÐÔ,¹Ø¼üÊÇÔõô½«¸´ÊýÐÎʽת»¯³ÉʵÊýÐÎʽµÄº¯Êý.
7Â¥2015-05-14 08:24:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

¹ÂÓð

Ìú³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
3Â¥: Originally posted by hank612 at 2015-05-13 01:26:16
Wurongjunר¼ÒÒѾ­ÓÐÇåÎúÍ걸µÄ½â´ð, ÎÒÀ´»­ÉßÌí×ãÒ»ÏÂ.
Èç¹ûÈÃc^4=\frac{a}{b}, ÄÇôԭÀ´¶¨»ý·ÖµÈÓÚ (y=cx)
\frac{1}{cb^2}\int_{0}^{c}\frac{dy}{(y^4+1)^2}.

Õâ¸ö±»»ýº¯ÊýµÄÔ­º¯Êý¼ûͼ, ÄãÒ²¿ÉÒÔÖ±½ÓÑéÖ¤ ...

Ç×£¬ÄܸæÖªÓõÄÊÇʲôÈí¼þÂð£¿

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
8Â¥2015-05-15 17:46:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

MathematicaÈí¼þ'¿ÉÒÔÈ¥ÍøÕ¾www.wolframalpha.comÓÐÔÚÏß°æ±¾Ö±½ÓÓÃ

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
We_must_know. We_will_know.
9Â¥2015-05-15 23:17:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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