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[°øÁö] Àΰ ¼ö°»ý Ä«Ä«¿ÀÅå ÁúÀÇÀÀ´ä ¹æ¹ý |
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2021-05-20 |
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[°øÁö] Àΰ ¼ö°»ý Ä«Ä«¿ÀÅå ÁúÀÇÀÀ´ä ¹æ¹ý |
ÀÛ¼ºÀÚ |
ȫâÀÇ |
µî·ÏÀÏ |
2021-05-20 |
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¾È³çÇϼ¼¿ä, ȫâÀÇ ¼±»ý´ÔÀÔ´Ï´Ù.
Àΰ ¼ö°»ý ¿©·¯ºÐµé
Ä«Ä«¿ÀÅå ÁúÀÇÀÀ´ä ¹æ¹ýÀÔ´Ï´Ù.
* Áú¹® ¹æ¹ý
1. Ä«Ä«¿ÀÅå¿¡ ¼±»ý´Ô ¾ÆÀ̵ð Ãß°¡
ȫâÀÇ ¼±»ý´Ô Ä«Ä«¿ÀÅå ¾ÆÀ̵ð : hongdly
2. Áú¹®ÇÒ ¶§, º»ÀÎÀÌ ¼ö°ÇÏ°í ÀÖ´Â °ÀÇ¸í ±âÀç / ¸î °ÀÎÁö ±âÀçÇØÁֽñ⠹ٶø´Ï´Ù.
°¨»çÇÕ´Ï´Ù. |
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2415 |
°ÀÇ Áß °è»ê |
seonben** |
2019-08-18 |
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°ÀÇ Áß °è»ê |
ÀÛ¼ºÀÚ |
seonben** |
µî·ÏÀÏ |
2019-08-18 |
|
±³¼ö´Ô, 21° 18ºÐ¿¡ L(1,0,0) °è»êÇÏ½Ç ¶§ (-4,1) z ¼ººÐÀ̶ó°í ÇÏ½Ã¸é¼ °è»êÇϼ̴µ¥, L(1,0,0)Àº x=1,y=0,z=0À̹ǷΠ(-4,1)ÀÌ ¾Æ´Ï¶ó (2,1)ÀÌ ¸Â´Â °Í °°½À´Ï´Ù. È®ÀÎ ºÎŹµå¸³´Ï´Ù. |
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2019-08-19 |
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2019-08-19 |
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°è»ê ½Ç¼ö°¡ ÀÖ¾ú³×¿ä.
(2, 1) ÀÌ ¸Â½À´Ï´Ù. |
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2414 |
°è¼öÇà·Ä Áú¹®ÇÕ´Ï´Ù. |
96gyw** |
2019-08-17 |
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°è¼öÇà·Ä Áú¹®ÇÕ´Ï´Ù. |
ÀÛ¼ºÀÚ |
96gyw** |
µî·ÏÀÏ |
2019-08-17 |
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¼±Çü´ë¼öÇÐ ±³Àç 138ÆäÀÌÁö¸¦ º¸¸é ÇØ°¡ Á¸ÀçÇÏÁö ¾Ê´Â °æ¿ì 1.°è¼öÇà·Ä½Ä |A| = 0 À̶ó´Â Á¶°Çµµ °è¼öÇà·Ä A°¡ Á¤¹æÇà·ÄÀ϶§¸¸ ¸¸Á·ÇؾßÇÏ´Â Á¶°ÇÀΰ¡¿ä?
±³Àç¿¡ º¸¸é ÇØ°¡ Á¸ÀçÇÏ´Â °æ¿ì(¿ÀÁ÷Çϳª,¹«¼öÈ÷¸¹Àº) °è¼öÇà·Ä½Ä ÆÇ´ÜÀº |
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2019-08-18 |
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haeun8** |
µî·ÏÀÏ |
2019-08-18 |
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2413 |
62p À¯ÇüÇнÀ2 |
biuld** |
2019-08-16 |
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62p À¯ÇüÇнÀ2 |
ÀÛ¼ºÀÚ |
biuld** |
µî·ÏÀÏ |
2019-08-16 |
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º¸±â1¹ø µ¨Å¸=min{1,$/5} ¿¡¼ ÀÛÀº°ªÀ¸·Î µ¨Å¸¸¦ $/5·Î Àâ´Â°Ç ¾Ë°Ú´Âµ¥¿ä.k=1À» ´ëÀÔÇÏ´Â ÀÌÀ¯´Â ¹º°¡¿ä? µ¨Å¸¿¡ ¸Â´Â °ª $/5¸¦´ëÀÔÇßÀ¸¸é, µ¨Å¸=min{1,$/5}ÀÇ ±â´ÉÀº ³¡³°Çµ¥ 1°ú $/5ÇÏ°í °ü·ÃÀִ°͵µ ÀüÇô¾Æ´Ñµ¥ k¿¡ 1À» ¿Ö ´ëÀÔÇϳª¿ä? °ü·ÃÀÌ ¾ø´Ù¸é k=1 À̵Ǹé k=2,3,4 µµ µÇ¾ßµÇ´Âµ¥ ¼º¸³ÀÌ ¾ÈµÇ´Âµ¥ ¹®Á¦°¡ À߸øµÈ°Ç°¡¿ä?
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2019-08-19 |
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2019-08-19 |
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|x-2|<1 ÀÎ °ÍÀ» |x-2|<2 ¶ó°í ÇÑ´Ù°í Ʋ¸° °ÍÀº ¾Æ´Ñ °Í°ú °°Àº ¸Æ¶ôÀÔ´Ï´Ù. |
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2412 |
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k7dlxow** |
2019-08-16 |
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k7dlxow** |
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2019-08-16 |
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ÀÌ ¹®Á¦¿¡¼ f(x) = f'(x) ¶ó´Â Á¶°ÇÀÌ ³ª¿À´Âµ¥ , Çؼ³Áö¿¡ º¸¸é ÀÌ°ÍÀ» °¡Áö°í ¹Ù·Î f(x) = e^x ¶ó°í µµÃâÇس»´õ±º¿ä ¸ðµç x¿¡¼ ¹ÌºÐ°è¼ö¿Í ÇÔ¼ö°ªÀÌ ¼·Î °°À¸¸é ÇÔ¼ö e^x Àΰ¡¿ä? ±Ã±ÝÇÕ´Ï´Ù |
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2019-08-17 |
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2019-08-17 |
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2411 |
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2019-08-16 |
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2019-08-16 |
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2019-08-17 |
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2410 |
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sannabi** |
2019-08-14 |
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sannabi** |
µî·ÏÀÏ |
2019-08-14 |
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À§ÀÇ µÎ ½ÄÀ» ±¸ÇÒ ¶§ ½Äº¯ÇüÀ» ÇÏ¾ß ÇÑ´Ù°í Çϼ̴µ¥ ¾î¶»°Ô º¯ÇüÀ» Çؼ ±¸ÇØ¾ß ÇÏ´ÂÁö ¸ð¸£°Ú½À´Ï´Ù!
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2019-08-16 |
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2019-08-16 |
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2409 |
315p À¯ÇüÇнÀ 2 |
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2019-08-14 |
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315p À¯ÇüÇнÀ 2 |
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µî·ÏÀÏ |
2019-08-14 |
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2019-08-14 |
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2019-08-14 |
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2019-08-14 |
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µî·ÏÀÏ |
2019-08-14 |
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2019-08-14 |
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µÎ¹ø° ½ÄÀº 0*¹«ÇÑ´ë À̹ǷΠ½Äº¯Çü ÈÄ °è»êÇØ¾ß ÇÕ´Ï´Ù. |
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2407 |
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2019-08-14 |
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baesohee8** |
µî·ÏÀÏ |
2019-08-14 |
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Çà·Ä µ¿Ä¡ÀÎ Á¶°Ç ¼³¸íÇϽǶ§,,
nullA = null AtA ==> null At = null AAt ¶ó µÇÀÖÀݾƿä,,,, ±Ùµ¥ RANK ¼ºÁú¿¡´Â RANK A = RANK At °¡ ÀÖÀÝ¾Æ¿ä ±×·¯¸é null A = null AT °¡ µÇ°í µû¶ó¼ null AAT = null AtA °¡ µÉ ¼ö ÀÖ³ª¿ä????????
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2019-08-14 |
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2019-08-14 |
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A °¡ m¡¿n Çà·ÄÀÏ ¶§ rankA=rankA^T=k ¶ó Çϸé
nullityA=n-k ÀÌ°í nullityA^T=m-k À̹ǷΠnullityA=nullityA^T °¡ ¾Æ´Õ´Ï´Ù. |
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2406 |
10° |
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2019-08-14 |
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2019-08-14 |
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ÇØ°ø°£À̶û ÇØ°ø°£ Â÷¿ø ¼³¸íÇϽǶ§
ÇØ°ø°£À̶û ÇØ°ø°£ÀÇ Â÷¿øÀÌ °°Àº ¸»ÀÎÁö Àß ¸ð¸£°Ú¾î¿ä
°°Àº¸»À̸é nullspace = Çà°ø°£ÀÇ Á÷±³º¸°ø°£ = nullity = ¹ÌÁö¼öÀÇ °¹¼ö = rank °¡ µÇ´Âµ¥ ÇØ°ø°£ÀÏ¾Æ ÇØ°ø°£ÀÇ Â÷¿øÀÌ °°Àº ¸»Àΰ¡¿ä/?? |
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2019-08-14 |
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2019-08-14 |
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°ø°£°ú °ø°£ÀÇ Â÷¿øÀº ´Ù¸¥¸»ÀÔ´Ï´Ù.
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Áï, dim(nullspace)=nullity ÀÎ °ÍÀÔ´Ï´Ù. |
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2405 |
7ȸ 12¹ø¿¡ °¡¹øÀÌ¿ä! |
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2019-08-13 |
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7ȸ 12¹ø¿¡ °¡¹øÀÌ¿ä! |
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µî·ÏÀÏ |
2019-08-13 |
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A¿ÍB°¡ ¼·Î ¿µÀÎÀÚ À϶§ °¡¿¡ ¹Ý·Ê°¡ µÇÁö¾Ê³ª¿ä??
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2019-08-14 |
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2019-08-14 |
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µû¶ó¼ ¹Ý·Ê°¡ µÉ ¼ö ¾ø½À´Ï´Ù. |
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2404 |
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2019-08-13 |
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k7dlxow** |
µî·ÏÀÏ |
2019-08-13 |
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lim ⎰(x^5 - 6x^9 + sinx/(1+x^4)^2 + e^-x^2) dx ¿¡¼ ÇÇÀûºÐÇÔ¼ö°¡ ¿ìÇÔ¼ö¶ó°í ÇÏ¿© °©Àڱ⠽ÄÀÌ ⎰e^-x^2 dx ¶ó°í º¯Çߴµ¥ ¿Ö ¶á±Ý¾øÀÌ x^5 - 6x^9 + sinx/(1+x^4)^2 <- ÀÌÂÊ ºÎºÐÀº ´Ù »ç¶óÁö°í e^-x^2¸¸ ³²´Â°Ç°¡¿ä? ÀÌÇØ°¡ ¾ÈµË´Ï´Ù |
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2019-08-14 |
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2019-08-14 |
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À¯ÇüÇнÀ1¹ø ¹®Á¦ ¾Æ·¡ [Âü°í] ¿¡µµ ½áÁ® ÀÖ½À´Ï´Ù.
±¸°£ÀÌ -a ºÎÅÍ a ±îÁöÀ̹ǷΠ±âÇÔ¼ö´Â ÀûºÐÇÏ¸é ´Ù 0ÀÌ µË´Ï´Ù.
µû¶ó¼ ±âÇÔ¼öÀÎ ºÎºÐÀº ´Ù ¾ø¾ÖÁÖ°í ¿ìÇÔ¼ö¸¸ ³²°ÜµÐ °ÍÀÔ´Ï´Ù. |
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2403 |
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2019-08-13 |
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k7dlxow** |
µî·ÏÀÏ |
2019-08-13 |
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xÀÇn½ÂÀ» ¹üÀ§¿¡ µû¶ó ³ª´©¾î Á༠ÀûºÐÀ» ÇÏ´Â °Çµ¥, xÀÇn½ÂÀÌ ¹«ÇÑ´ëÀ϶§ x+3À» ¿Ö »ó¼öó·³ Ãë±ÞÇØÁÖ³ª¿ä? (x+3)(x+x^n)À» Àü°³½ÃÅ°¸é x^n+1ÀÌ ³ª¿Í ¹ß»êÇϴ°ÅÁö ¾Ê³ª¿ä? ¾Æ´Ï¸é ¹ÌºÐÇп¡¼ ¹è¿üµíÀÌ ÃÖ°íÂ÷Ç×À» Á¦¿ÜÇÑ ³ª¸ÓÁö¸¦ ¹«½ÃÇÑ´Ù¸é (x+3)(x+x^n)¿¡¼ x^nÀ» Á¦¿ÜÇÏ°í ÀüºÎ ¹«½ÃÇÏ´ø°¡¿ä ¿Ö x+3ÀÌ ¶±ÇÏ´Ï ³ª¿À´ÂÁö ¸ð¸£°Ú½À´Ï´Ù ºÐ¸íÈ÷ Àü°³ÇÏ¸é ºÐ¸ðÀÇ ÃÖ°íÂ÷Ç×ÀÌ Ä¿ÁúÅÙ¸»ÀÌÁÒ |
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2019-08-14 |
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2019-08-14 |
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±ØÇÑ¿¡¼ n ÀÌ º¯¼öÀÌ°í x ´Â »ó¼öÀÔ´Ï´Ù.
µû¶ó¼ x^n Àº ´ÙÇ×ÇÔ¼ö°¡ ¾Æ´Ñ Áö¼öÇÔ¼ö·Î ºÁ¾ß ÇÕ´Ï´Ù.
Áï, 3^n+1 À» 3^n º¸´Ù Å« °ÍÀ¸·Î Ä¡Áö ¾ÊÁÒ
ºñ±³ÇÒ ¶§ 3^n+1 = 3*3^n À¸·Î ¹Ù²ã ÃÖ°íÂ÷Ç×Àº 3^n ÀÌ°í °è¼ö°¡ 3 À¸·Î »ý°¢ÇÑ ¹æ½ÄÀ¸·Î ¹®Á¦¸¦ Ç®¾îÁà¾ß ÇÏ´Â °ÍÀÔ´Ï´Ù. |
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2402 |
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2019-08-13 |
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249ÆäÀÌÁö 46¹ø Áú¹® |
ÀÛ¼ºÀÚ |
sannabi** |
µî·ÏÀÏ |
2019-08-13 |
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Çؼ³¿¡¼ 1/(1+cos@)^2 ¿¡¼ tan@/2¸¦ t·Î ġȯÇ϶ó°í Çؼ³¿¡ ³ª¿ÍÀִµ¥ p87ÂÊ¿¡¼ ÇÇÀûºÐ ÇÔ¼öÀÇ ºÐ¸ð°¡ 2Â÷ÀÎ »ï°¢ÇÔ¼öÀÎ °æ¿ì tanx¸¦ t·Î ġȯÇ϶ó µÇ¾îÀִµ¥ À§ÀÇ ½Äµµ »ï°¢ÇÔ¼öÀÇ 2Â÷ÀÎ °æ¿ìÀݾƿä. Á¤È®È÷ ¾ðÁ¦ tan@¸¦ , tan 2/@¸¦ t·Î ġȯÇØ¾ß ÇÏ´ÂÁö ¸ð¸£°Ú½À´Ï´Ù. |
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2019-08-14 |
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(1+cos)^2 =1+2cos+cos^2 À¸·Î ÀÏÂ÷°¡ Æ÷ÇԵǾî ÀÖ½À´Ï´Ù.
tanx=t ·Î ġȯÇÒ °æ¿ì cos Àº ·çÆ®°¡ Æ÷ÇÔµÈ ½ÄÀÌ µÇ¹Ç·Î ÀûºÐÇϱ⠾î·Æ½À´Ï´Ù.
µû¶ó¼ tanx/2=t ·Î ġȯÀ» ÇÕ´Ï´Ù. |
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2401 |
296P 36¹ø Áú¹® |
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2019-08-13 |
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