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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 |
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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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2219 |
439p ÃâÁ¦¿¹»ó¹®Á¦ 13¹ø Áú¹® ÀÖ½À´Ï´Ù |
jin995** |
2019-06-02 |
±ÛÁ¦¸ñ |
439p ÃâÁ¦¿¹»ó¹®Á¦ 13¹ø Áú¹® ÀÖ½À´Ï´Ù |
ÀÛ¼ºÀÚ |
jin995** |
µî·ÏÀÏ |
2019-06-02 |
|
yÅõÇÁ¶óÀÓ<0À϶§ °î·üÁ᫐ °ø½ÄÀº ¹«¾ùÀΰ¡¿ä? Çؼ³¿¡ Y=1-4·Î -3ÀÌ¶ó ¾²¿©Àִµ¥ Y=1-4°¡ ¾Æ´Ï¶ó Y=2-4 ¾Æ´Ñ°¡¿ä? ¹®Á¦¿¡¼ (1,2) ¶ó ¾²¿©Àִµ¥ y¼ººÐÀº 2Àε¥ 1¿¡¼ »©´Â ÀÌÀ¯°¡ ±Ã±ÝÇÕ´Ï´Ù |
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2019-06-03 |
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ÀÛ¼ºÀÚ |
haeun8** |
µî·ÏÀÏ |
2019-06-03 |
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Çؼ³ÀÇ °ø½ÄÀº ºÐ¸ð y'' ¿¡ Àý´ñ°ªÀ» ¾º¿ö³ù½À´Ï´Ù.
°á·ÐÀûÀ¸·Î °î·üÁ᫐ ³»¿ë¿¡¼ÀÇ °ø½Ä°ú Çؼ³¿¡¼ÀÇ °ø½ÄÀº °°Àº °ÍÀÔ´Ï´Ù.
y'' ÀÌ ¾ç¼ö ¶Ç´Â À½¼ö¿¡ »ó°ü¾øÀÌ ¾ÕÀÇ ³»¿ë¿¡¼ÀÇ °ø½ÄÀ¸·Î ¾Ï±âÇÏ½Ã¸é µË´Ï´Ù.
³× (1,2) À̹ǷΠ2¸¦ ´ëÀÔÇÏ´Â °ÍÀÌ ¸Â½À´Ï´Ù. µû¶ó¼ ´äµµ 2¹øÀÌ ¾Æ´Ñ 3¹øÀ¸·Î üũÇØÁÖ¼¼¿ä. |
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2218 |
p46 9¹ø |
swhj48** |
2019-06-01 |
±ÛÁ¦¸ñ |
p46 9¹ø |
ÀÛ¼ºÀÚ |
swhj48** |
µî·ÏÀÏ |
2019-06-01 |
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¾Æ´¢.. ±×´Ï±î A*n-1°ú a_nÀÌ °°Àº°Ô ¿Ö °°³ª¿ä?
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2019-06-03 |
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haeun8** |
µî·ÏÀÏ |
2019-06-03 |
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A^n = a_n A ¶ó Çß°í A^n = A^n-1 ¡¿ A À̹ǷΠa_n A = A^n-1 A ÀÔ´Ï´Ù.
½ÄÀ» Àß º¸½Ã¸é µî½ÄÀÔ´Ï´Ù. ab=cb ÀÏ ¶§ a=c ¶ó°í ÇÏ´Â ¿ø¸®¿Í °°½À´Ï´Ù. |
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2217 |
¼öÁ¤ ÈÄ Àçµî·ÏÀÔ´Ï´Ù! |
dds030** |
2019-06-01 |
±ÛÁ¦¸ñ |
¼öÁ¤ ÈÄ Àçµî·ÏÀÔ´Ï´Ù! |
ÀÛ¼ºÀÚ |
dds030** |
µî·ÏÀÏ |
2019-06-01 |
|
P=1/N(lnN)^2 ¿¡¼ nº¸´Ù (lnN)^2ÀÌ ÀÛ´Ù°í ¾ø¾Ö°í ÆÇ´ÜÇؼ 1/N ¹ß»êÀÌ ³ª¿Ô´Âµ¥(P´Â ¼ö·ÅÀÌÁö¸¸) ¾Õ¼ (N!)^2/(2N)! ¿¡¼ x^2/y! À̶ó°í º¸°í Ãʹݿ¡ ¸»¾¸Çϼ̴ø ¼ö¿ Å©±â ÆÇÁ¤À» º¸°í ´õ ÀÛÀº x^2¸¦ Áö¿ì¼Ì½À´Ï´Ù. ±×·³ ±×³É ºÃÀ» ¶§ ÆÇ´ÜÇÑ´Ù¸é n º¸´Ù x^2ÇüÅ°¡ Å« ÂÊÀÌ¿©¼ nÀ» ¹«½ÃÇØ¾ß ÇÏ´Â °Í ¾Æ´Ñ°¡ ¶ó°í »ý°¢Çß½À´Ï´Ù.
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2019-06-03 |
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2019-06-03 |
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1. °öÀ¸·Î ÀÌ·ç¾îÁ®ÀÖ´Â ½Ä¿¡¼ ¹«½Ã¸¦ ÇÒ ¶§´Â ¼ö·ÅÀÌ ³ª¿Ã ½Ã¿¡¸¸ °¡´ÉÇϹǷÎ
(lnn)^2 À» ¹«½ÃÇÏ°í ¹ß»êÀÌ ³ª¿ÔÀ¸¹Ç·Î ¹«½ÃÇÏÁö ¾Ê°í ´Ù¸¥ ÆÇÁ¤¹ýÀ» ÀÌ¿ëÇØ¾ß ÇÕ´Ï´Ù.
µû¶ó¼ ÀûºÐÆÇÁ¤¹ýÀ» ÀÌ¿ëÇÏ¸é ¼ö·ÅÀÎ °ÍÀ» ¾Ë ¼ö ÀÖ½À´Ï´Ù.
2. n º¸´Ù x^2ÇüÅ°¡ Å« ÂÊ <- ¿©±â¼ nÀº (N!)^2/(2N)! ¿¡¼ 2n À» ¸»ÇÏ´Â °ÍÀΰ¡¿ä?
n °ú x^2 ÀÇ ºñ±³´Â ¹Ù±ùÂÊÀÇ ½ÄÀÇ ÇüÅÂ¿Í ¾ÈÂÊÀÇ ½ÄÀÇ ÇüŸ¦ ºñ±³ÇÏ´Â °ÍÀÌ´Ï ÀûÀýÇÏÁö ¾Ê½À´Ï´Ù.
Å« ƲÀ» º¸¾ÒÀ» ¶§ ()^2 °ú ()! ÇüÅÂÀÎ °ÍÀÔ´Ï´Ù. µû¶ó¼ ÀÛÀº ()^2 ÇüŸ¦ ¹«½ÃÇÑ °ÍÀÔ´Ï´Ù. |
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2216 |
¼Óµµ¿Í ´Ù¸¥ º¯ÈÀ² Áú¹®µå¸³´Ï´Ù. |
gmt13** |
2019-06-01 |
±ÛÁ¦¸ñ |
¼Óµµ¿Í ´Ù¸¥ º¯ÈÀ² Áú¹®µå¸³´Ï´Ù. |
ÀÛ¼ºÀÚ |
gmt13** |
µî·ÏÀÏ |
2019-06-01 |
|
176p À¯Çü1¹ø xÁ¦°ö+yÁ¦°ö=13Á¦°öÀ» t·Î ¹ÌºÐÇϸé 2xdt/dx+2ydt/dy=0ÀÌ µÇ´Âµ¥ ÇÕ¼ºÇÔ¼öÀÇ ¹ÌºÐÀ» ÀÌ¿ëÇÑ °Ç°¡¿ä?
x,y½ÄÀ» t·Î ¹ÌºÐÇÏ´Â°Ô Àß ÀÌÇØ°¡ ¾ÈµË´Ï´Ù. ¾îµð¸¦ ´Ù½Ã ÇнÀÇØ¾ß ÇÒ±î¿ä? |
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haeun8** |
2019-06-03 |
±ÛÁ¦¸ñ |
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ÀÛ¼ºÀÚ |
haeun8** |
µî·ÏÀÏ |
2019-06-03 |
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ÀÌ°ÍÀº µû·Î ³»¿ëÀ» ´Ù·ç±âº¸´Ù ¹ÌºÐÀÇ ±âº»³»¿ëÀÔ´Ï´Ù.
ÇÕ¼ºÇÔ¼ö, À½ÇÔ¼ö ¹ÌºÐÇÒ ¶§µµ ÀÌ¿ëÇÑ ¿ø¸®ÀÔ´Ï´Ù.
y=x^2 ¿¡¼ y´Â x¿¡ °üÇÑ ½ÄÀ̹ǷΠx·Î ¹ÌºÐÇÒ ¼ö ÀÖ½À´Ï´Ù.
¾çº¯À» x ·Î ¹ÌºÐÇϸé dy/dx =2x ¶ó ÇÕ´Ï´Ù.
Áº¯¿¡ y¸¦ x·Î ¹ÌºÐÇߴٴ ǥ½Ã¸¦ ÇØÁØ °ÍÀÌ´Ù ÀÌÇØÇÏ½Ã´Â°Ô ÁÁÀ» µíÇÕ´Ï´Ù.
x,y °¡ t¿¡ °üÇÑ ÇÔ¼öÀ̹ǷΠt·Î ¹ÌºÐÇÒ ¼ö ÀÖ°í
t·Î ¹ÌºÐÇÒ ½Ã dx/dt , dy/dt ¸¦ ºÙ¿©Áà¾ß ÇÕ´Ï´Ù. |
|
2215 |
(ÀçÁú¹®) 28ÆäÀÌÁö ¹®Á¦ Áú¹®µå¸³´Ï´Ù. |
jin53** |
2019-06-01 |
±ÛÁ¦¸ñ |
(ÀçÁú¹®) 28ÆäÀÌÁö ¹®Á¦ Áú¹®µå¸³´Ï´Ù. |
ÀÛ¼ºÀÚ |
jin53** |
µî·ÏÀÏ |
2019-06-01 |
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¼ö°íÇϽʴϴÙ. ÀΰÀ» µè´ø Áß 2° 28ÆäÀÌÁö À¯ÇüÇнÀ 2¹ø¿¡ °ø½ÄÀ» ÀÌ¿ëÇؼ ¹®Á¦¸¦ Ç®´øµ¥ °ø½ÄÀ» ÀÚ¼¼ÇÏ°Ô ¾Ë·ÁÁÖÁö ¾Ê¾Æ¼ ¸î ¹ø µé¾îµµ Àß ¸ð¸£°Ú½À´Ï´Ù. ÀÌ °ø½Ä¿¡ ´ëÇØ ÀÚ¼¼ÇÏ°Ô ¼³¸íÇØ ÁÖ¼ÌÀ¸¸é ÇÕ´Ï´Ù.(»çÁøÂüÁ¶)
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2019-06-01 |
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haeun8** |
µî·ÏÀÏ |
2019-06-01 |
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ÀÌ°ÍÀº °ø¾÷¼öÇÐÀÇ ³»¿ëÀÌ ¾Æ´Ñ ÀûºÐ¿¡¼ ¹è¿î ³»¿ëÀÔ´Ï´Ù.
ºÎºÐÀûºÐ °ø½ÄÀ¸·Î µÎÇÔ¼öÀÇ °ö¿¡ ´ëÇÑ ÀûºÐ¿¡¼ ÀÌ¿ëÇÕ´Ï´Ù.
¿©±â¿¡ °ø½ÄÀ» Àû±â´Â ¾î·Æ³×¿ä.
ÇØÄ¿½ºÆíÀÔ ÀûºÐÇÐ1 50ÆäÀÌÁö¿¡ °ø½ÄÀÌ ÀÖ½À´Ï´Ù.
(Ȥ Ã¥ÀÌ ¾ø´Ù¸é ³×À̹ö¿¡ 'ºÎºÐÀûºÐ°ø½Ä' °Ë»öÇϸé È®ÀÎ ÇÒ ¼ö ÀÖ½À´Ï´Ù.)
°ø¾÷¼öÇи¸ ¼ö°ÇϽô °Í °°Àºµ¥, ¾ÕÀÇ Ä¿¸®Å§·³À» °øºÎÇϼ̳ª¿ä?
±× ÀüÀÇ Ä¿¸®Å§·³ ³»¿ëÀÌ ÀÌ¿ëµÇ´Ï °øºÎÇÏÁö ¾Ê¾Ò´Ù¸é ²À °øºÎÇÏ½Ã±æ ¹Ù¶ø´Ï´Ù. |
|
2214 |
414p 25¹ø Áú¹® ÀÖ½À´Ï´Ù |
jin995** |
2019-06-01 |
±ÛÁ¦¸ñ |
414p 25¹ø Áú¹® ÀÖ½À´Ï´Ù |
ÀÛ¼ºÀÚ |
jin995** |
µî·ÏÀÏ |
2019-06-01 |
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r^2=4cos2¼¼Å¸ ±×·¡ÇÁ°¡ a=·çÆ®2ÀÎ ¿¬ÁÖÇüÀε¥ Çؼ³¿¡ ±×·¡ÇÁ¸¦ º¸¸é ¿¬ÁÖÇüÀÇ ±×·¡ÇÁ ¼¼Å¸=0ÀÎ Á¡¿¡¼ 2·çÆ®a¿©¾ß Çϴµ¥ a°¡ ·çÆ®2Àε¥ ¿Ö 2°¡ µÇ´ÂÁö ¸ð¸£°Ú½À´Ï´Ù |
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2019-06-01 |
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ÀÛ¼ºÀÚ |
haeun8** |
µî·ÏÀÏ |
2019-06-01 |
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¹ÌºÐÇÐ 406ÆäÀÌÁö ¸»¾¸ÇϽô°ǰ¡¿ä.
r^2 = a^2cos(2theta) ¿¡¼ theta= 0 ÀÏ ¶§ a ¶ó°í º¯°æÇØÁÖ¼¼¿ä.
À߸ø³ª¿Â °ÍÀ̸ç Á÷Á¢ r^2 = 4cos(2theta) ¿¡¼ theta=0 À» ´ëÀÔÇϸé r=2 °¡ ³ª¿À´Â °ÍÀÌ ¸Â½À´Ï´Ù. |
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2213 |
28ÆäÀÌÁö ¹®Á¦ Áú¹®µå¸³´Ï´Ù. |
jin53** |
2019-05-31 |
±ÛÁ¦¸ñ |
28ÆäÀÌÁö ¹®Á¦ Áú¹®µå¸³´Ï´Ù. |
ÀÛ¼ºÀÚ |
jin53** |
µî·ÏÀÏ |
2019-05-31 |
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2019-06-01 |
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haeun8** |
µî·ÏÀÏ |
2019-06-01 |
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¾î¶² ¹®Á¦ÀΰÇÁö Áú¹®ÀÌ ¿¢¹ÚÀ¸·Î ³ª¿À³×¿ä.
Çпø¿¡¼ À¯¼± ¾È³» Çص帮µµ·Ï ÇÏ°Ú½À´Ï´Ù. |
|
2212 |
p46 9¹ø |
swhj48** |
2019-05-31 |
±ÛÁ¦¸ñ |
p46 9¹ø |
ÀÛ¼ºÀÚ |
swhj48** |
µî·ÏÀÏ |
2019-05-31 |
|
Çؼ³¿¡¼ An-1 °ú an À» °°´Ù°í ³õ°í Ç®¾ú´øµ¥ ÀÌÀ¯°¡ ¹«¾ùÀΰ¡¿ä?
±×¸®°í Çà·Ä AÀÇ °ªÀº 0 ¾Æ´Ñ°¡¿ä? ±×·³ anAÀÇ °ªÀº 0¾Æ´Ñ°¡¿ä,,?¤Ì¤Ì |
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2019-06-01 |
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haeun8** |
µî·ÏÀÏ |
2019-06-01 |
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¹®Á¦¿¡¼ A^n = a_n A ¶ó Çß°í A^n = A^n-1 ¡¿ A À̹ǷΠa_n=A^n-1 ÀÔ´Ï´Ù.
Çà·Ä A ÀÇ °ªÀ̶ó´Â °³³äÀº ¾ø½À´Ï´Ù. |
|
2211 |
53p 35¹ø |
thdtkddlr0** |
2019-05-31 |
±ÛÁ¦¸ñ |
53p 35¹ø |
ÀÛ¼ºÀÚ |
thdtkddlr0** |
µî·ÏÀÏ |
2019-05-31 |
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n=-1ÀÌ¸é °ªÀÌ 5ÀÌ°í, n=1À̸é -2Àε¥ ¿Ö »ó±ØÇÑÀÌ 1ÀΰÅÁÒ??..
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2019-06-01 |
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µî·ÏÀÏ |
2019-06-01 |
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¿ì¼± nÀÇ °ª¿¡ À½¼ö´Â´ëÀÔÇÏÁö ¾Ê½À´Ï´Ù.
¼ö¿ÀÇ ±ØÇÑÀº ¹«ÇÑ´ë·Î °¥ ¼ö·Ï ¼ö¿ÀÌ ¾î¶»°Ô ÁøÇàµÇ´Â °¡¸¦ º¸´Â°Í Àε¥
(-1)^n ÀÌ ÀÖ¾î Áøµ¿ÇÏ°Ô µË´Ï´Ù. Áï 1 °ú -1 À» ¿Ô´Ù°¬´Ù ÇÏ¸ç ±× Áß Å« 1 À» »ó±ØÇÑÀ̶ó ÇÕ´Ï´Ù. |
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2210 |
51p 28¹ø |
thdtkddlr0** |
2019-05-31 |
±ÛÁ¦¸ñ |
51p 28¹ø |
ÀÛ¼ºÀÚ |
thdtkddlr0** |
µî·ÏÀÏ |
2019-05-31 |
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a_n+1=1/6(a_n+10000)ÀÌ ¾Æ´Ñ ÀÌ·ù¸£ ¸ð¸£°Ú½À´Ï´Ù.
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2019-06-01 |
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haeun8** |
µî·ÏÀÏ |
2019-06-01 |
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5/6 À» »ç¿ëÇÏ°í ¸¸¿øÀÇ ÃæÀüÇÏ¿´À¸¹Ç·Î ¸¸¿øÀº µû·Î ´õÇØ¾ß ÇÕ´Ï´Ù.
Áï ¿À´ÃÀÇ µ·Àº ¾îÁ¦ÀÇ µ·ÀÇ 1/6 ÀÌ ³²°í ¸¸¿øÀ» ÃæÀüÇÑ°ÍÀÔ´Ï´Ù. |
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2209 |
46p 9¹ø |
thdtkddlr0** |
2019-05-31 |
±ÛÁ¦¸ñ |
46p 9¹ø |
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thdtkddlr0** |
µî·ÏÀÏ |
2019-05-31 |
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A=A^(n-1)AÀÎ ÀÌÀ¯¿Í a_1=1ÀÎ ÀÌÀ¯¸¦ ¸ð¸£°Ú½À´Ï´Ù.
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haeun8** |
µî·ÏÀÏ |
2019-06-01 |
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2^n = 2^(n-1)¡¿2 ÀÎ °Íó·³ Çà·ÄÀÇ Á¦°ö ¶ÇÇÑ µ¿ÀÏÇÕ´Ï´Ù. Áï, A^n = A^(n-1)¡¿A ÀÔ´Ï´Ù.
A^n = a_n A ¿¡¼ n=1 À» ´ëÀÔÇϸé A=a_1 A À̹ǷΠa_1 =1 ÀÔ´Ï´Ù. |
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2208 |
p248 42¹ø |
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2019-05-31 |
±ÛÁ¦¸ñ |
p248 42¹ø |
ÀÛ¼ºÀÚ |
sea96** |
µî·ÏÀÏ |
2019-05-31 |
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¥è ¹üÀ§¸¦ ¾î¶»°Ô Á¤Çϳª¿ä? ±×¸®°í tan¥è/2=t·Î ġȯÇؼ ±¸ÇÏ¸é ¾ÈµÇ³ª¿ä?
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2019-06-01 |
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Çؼ³ È®ÀÎÇØ º¸¼Ì³ª¿ä.
ÀÌ ±Ø°î¼±Àº Á÷±³·Î ¹Ù²Ù¸é Ÿ¿øÀÎ °ÍÀ» ¾Ë ¼ö ÀÖ½À´Ï´Ù.
¸¹ÀÌ ³ª¿À´Â °î¼±ÀÇ ÇüÅ°¡ ¾Æ´Ï¹Ç·Î
±Ø°î¼±À¸·Î Ç®ÀÚ¸é Á¡À» Âï¾î°¡¸ç ±×¸²À» ÆľÇÇØ¾ß ÇÕ´Ï´Ù.
¶ÇÇÑ ±âŸġȯÀ¸·Î °è»êÇϴµ¥ ¾î·Á¿òÀÌ À־¿©
Á÷±³·Î ¹Ù²ã ¹®Á¦¸¦ Ǫ´Â °ÍÀÌ ÃÖ¼±ÀÔ´Ï´Ù. |
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2207 |
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2019-05-31 |
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¹ÌÀûºÐÇÐ2 ÀÎÅÍ³Ý ¼ö° ¼ø¼ Áú¹®ÀÔ´Ï´Ù |
ÀÛ¼ºÀÚ |
rlfls** |
µî·ÏÀÏ |
2019-05-31 |
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À̹øÁÖ¿¡ ±Þ¼ö µé¾î°¬½À´Ï´Ù ¼±Çü´ë¼öÇÐÀ» 7¿ùºÎÅÍ µéÀ¸·Á Çϴµ¥ ¼±Çü´ë¼öÇÐ ³¡³ª°í ´Ùº¯¼ö¹ÌÀûºÐÀ̶ó´Â ¹üÀ§¸¦ °øºÎÇÏ´Â »ç¶÷ÀÌ ¸¹Àºµ¥ ±Þ¼ö-ÆíµµÇÔ¼ö-¼±Çü´ë¼öÇÐ-ÁßÀûºÐ ¼ø¼´ë·Î µé¾îµµ ±¦ÂúÀ»±î¿ä? ¾Æ´Ï¸é ±Þ¼ö&Çà·Ä-ÆíµµÇÔ¼ö&º¤ÅÍ-ÁßÀûºÐÀ¸·Î µé¾î¾ß ÇÒ±î¿ä?
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2019-06-01 |
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