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作者 deathcustom 在 PTT [ Math ] 看板的留言(推文), 共100則
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全部Patent2229Electronics1453Gossiping1064Christianity999Stock657nobunyaga486Koei413WarringState404GO167ShowOff145Militarylife133NY-Yankees127comm_and_RF124points120Math100CMWang71feminine_sex65mud_jy55sex41AdvEduUK30StarTrek29Catholic24HCKuo23creditcard20tax20Sijhih19movie18PhD18graduate17home-sale16MLB16AllTogether15Buddhism15MLBGAME15Tsao15consumer14WOW14Grad-ProbAsk13HK-drama13Biology12Immigration12JinYong12medstudent12Atheism11Aviation11mud11biker10Insurance10media-chaos9Salary9SD-GundamOL9HomeTeach8NTUEESOCCER8DSLR7MJ7Tech_Job7C_Chat6CLHu6Military6RedSox6StupidClown6EmailYang5PttLaw5WorldCup5A-Rod4Baseball4HK-movie4JapanHistory4joke4JSonline4Learn_Buddha4Programming4specialman4TigerBlue4AntiVirus3Dynasty3Employee3HatePolitics3KOU3MacGyver3marriage3NTUEE107HW3PCSH91_3053PushDoll3SWORD3AC_In2Acad-Affairs2AndyLau2Angels2ASHS-93-li2BabyMother2Beauty2Boy-Girl2CareerPlan2cat2CCRomance2Cga2CHU-GO2cksh80th3072CrossStrait2EatToDie2FLAT_CLUB2KS93-3202KUAS2LTK2Master_D2Navy2NCCU_SEED2NCUT2NSYSU_EE95-12NTHU_COM6072NTU2NTUCHE-95-HW2NTUEE1072NTUEE1082NTUEE1122NUK_AC982Old-Games2politics2PublicServan2ScienceNote2SHORTY2story2TFSHS69th3092Theater2Tobacco2Wanted2AngelPray1ASHS-95RN1ask1BaseballSYS1BigPeitou1CATCH1ck47th3201ck53rd3031cookcomic1CSMU-MED971CSMU-MTBB1CTSH923011CYCUEL95A1Doraemon1DragonNest1DummyHistory1FCU-INS93B1FJU1FJU-ACCR941FJULaw-Team1GAMEMUSIC1HCHS933141ICDESIGN1Indians1JackLee1Jacky1japanavgirls1Key_Mou_Pad1Kids_Sucker1KMU_CIA1KS92-3161KS98-3021L_LifeJob1L_TalkandCha1LCD1LifeSci_961LinkinPark1lths-88-M1MATLAB1MdnCNhistory1MenTalk1midwaywisdom1MLSH493121Nationals1NCCU04_TUR1NCKU-physiol1NCKU_CSIE931NDHU-phy981NIU-ECE92b1NTHU-EE-CAPT1NTU-EM921NTUGO1PH-961photo1Physics1PttLifeLaw1Q_ary1QueerHabit1Suckcomic1TBDS1Teacher1TKU_EE_92C1TuTsau1Virgo1YP92-3041YP92-3121<< 收起看板(193)
3F→: 國中,不能用正弦的話,我學藝不精,得問V大跟H大04/28 18:25
4F→: 回musicbox:看圖得知不可能是140啊04/28 18:26
3F→: 上上一篇就會看到了,反正甚麼數學題都座標化最簡單04/22 12:32
3F推: 對耶,我卡住沒想到XD04/22 12:31
1F推: 有給定此曲線的焦點嗎?04/21 21:37
2F→: 有給定焦點的話很簡單,利用圓錐曲線光學特性04/21 21:38
3F→: 從焦點出發的反射線有下列性質:1. 雙曲線-延伸交點04/21 21:39
4F→: 在曲線另一側焦點;2. 拋物線-延伸線平行04/21 21:39
5F→: 3. 橢圓-延伸交點在曲線同側另一交(焦)點04/21 21:40
6F推: 沒有給焦點的話,先用兩組不同方向的平行線04/21 21:53
7F→: 應該說三組(每組兩條),如果三組的反射線交點共線04/21 21:54
11F推: V大說的也是一個辦法XDDD04/22 02:15
12F→: BTW, 根據我在呆大電機學的東西,工程嘛差不多就好04/22 02:16
13F→: 所以不需要真的完美的切線,只要差不多就可以判斷了04/22 02:16
6F推: x->R, 因為對所有實數x,f(x)有解04/18 15:00
7F→: 不是這樣說,學生可能會真的卡住--因為他沒辦法理解03/26 09:45
8F→: 怎麼吃剩下2.0202顆糖果03/26 09:46
3F→: 應該說for n is large enough/n->inf用字不精確抱歉03/11 23:26
3F→: k=6會是四點,不是三點喔03/08 21:59
23F推: 最極限的當然在這邊看的出來明顯差距XD02/17 11:21
2F→: 恩...............誤繕,你說的對02/05 16:34