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2018-10-03 |
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2018-10-03 |
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2018-10-01 |
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2018-10-03 |
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1. 89ÂÊ¿¡ ´ëÇ¥±âÃâÀ¯Çü¿¡¼ tanx=t·Î ³õ¾Ò´Âµ¥ sin2x°¡ ¾î¶»°Ô 2t/1+t^2ÀÎÁö Àß ¸ð¸£°Ú¾î¿ë 2. 95ÂÊ 13¹ø¿¡¼ Ç®ÀÌ ¹Ø¿¡¼ µÎ¹øÂ°¿¡¼ Á¤¸®ÇÑ´Ù°í Çϴµ¥ °è¼ÓÇØºÃ´Âµ¥ Ʋ¸®°Ô ³ª¿Í¼¿ä¤Ì¤Ì¾î¶»°Ô Á¤¸®¸¦ ÇØ¾ßÇÒÁö ¸ð¸£°Ú¾î¿ä 3. 96ÂÊ 17¹ø¿¡ ¹Ø¿¡¼ 3¹øÂ° ÁÙºÎÅÍ Á¤¸®¸¦ ¾î¶»°Ô ÇØ¼ 1/2-1/n+2°¡ ³ª¿Â°Ç°¡¿ä ? 4. 18¹ø¿¡ Ç®À̸¦ º¸¸é ln|(t-1/2) /(t+1/2)¿¡ e¸¦ ´ëÀÔÇÑ ´ÙÀ½ 2·Î ³ª´©¾îÁذͰ°À¸µ¥ ±×·³ Á©¾Õ¿¡ »ó¼ö 1/4ÀÌ 1/2·Î µÇ¾î¾ß Çϴ°Š¾Æ´Ñ°¡¿ä?
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2018-10-03 |
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1. tan2x=2t/1-t^2 À̹ǷΠ»ï°¢ÇüÀ» ±×·Á »ï°¢ºñÀÇ Á¤ÀǸ¦ ÀÌ¿ëÇϸé ÇÒ ¼ö ÀÖ½À´Ï´Ù.
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