[수Ⅰ][LV 1] 27강. 등차수열_등차수열의 합(1)

array(10) { [0]=> object(stdClass)#4841 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "ChSqHX30xg4" ["related_video_title"]=> string(57) "[수Ⅰ][LV 1] 28강. 등차수열_등차수열의 합(2)" ["posted_time"]=> string(21) "4 года назад" ["channelName"]=> string(12) "사오수학" } [1]=> object(stdClass)#4814 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "65SS6OvvzhU" ["related_video_title"]=> string(56) "[수Ⅰ][LV 1] 33강. 수열의 합_수열의 합 기본" ["posted_time"]=> string(21) "4 года назад" ["channelName"]=> string(12) "사오수학" } [2]=> object(stdClass)#4839 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "kyx8-bUFfss" ["related_video_title"]=> string(91) "[공통수학1] 기말고사 필수유형(마지막으로 한 번 더 정리하고 가요!)" ["posted_time"]=> string(19) "4 дня назад" ["channelName"]=> string(21) "청주고등곰수학" } [3]=> object(stdClass)#4846 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "f74zjqN72W4" ["related_video_title"]=> string(56) "수열 전체 85분에 끝내기 | 수학1 개념 정리" ["posted_time"]=> string(19) "1 год назад" ["channelName"]=> string(16) "설레는 수학" } [4]=> object(stdClass)#4825 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "naMsTOdT4Fg" ["related_video_title"]=> string(96) "Японец по цене ВАЗа! Оживляем пацанскую мечту :)" ["posted_time"]=> string(21) "2 часа назад" ["channelName"]=> string(34) "ИЛЬДАР АВТО-ПОДБОР" } [5]=> object(stdClass)#4843 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "-x4DBQJXM94" ["related_video_title"]=> string(96) "[깨봉직강 3편]초등학생도 이렇게 배우면 등비수열 공식없이 5초만에 끝!" ["posted_time"]=> string(21) "2 года назад" ["channelName"]=> string(25) "인공지능수학 깨봉" } [6]=> object(stdClass)#4838 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "fwPsk7h1vTM" ["related_video_title"]=> string(43) "등차수열의 합 이차함수의 관점" ["posted_time"]=> string(21) "2 года назад" ["channelName"]=> string(16) "김재하 수학" } [7]=> object(stdClass)#4848 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "ju3949F1vOQ" ["related_video_title"]=> string(54) "[수Ⅰ][LV 1] 25강. 등차수열_일반항 구하기" ["posted_time"]=> string(21) "4 года назад" ["channelName"]=> string(12) "사오수학" } [8]=> object(stdClass)#4824 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "NbOtk4GbvzQ" ["related_video_title"]=> string(115) "😱Я Заработал Триллион НЕ САЖАЯ РАСТЕНИЯ в ВЫРАСТИ САД! Grow a Garden" ["posted_time"]=> string(23) "9 часов назад" ["channelName"]=> string(17) "Нолик Roblox" } [9]=> object(stdClass)#4842 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "YTbA04_6l24" ["related_video_title"]=> string(83) "수열이 이렇게 쉬운 거였어? 수1 등차수열 개념 (스듀 김소이T )" ["posted_time"]=> string(21) "4 года назад" ["channelName"]=> string(18) "서울대소자쌤" } }