党和人民
Currently Offline
1 game ban on record | Info
705 day(s) since last ban
Recent Activity
1,175 hrs on record
last played on 25 May
24 hrs on record
last played on 26 Feb
63 hrs on record
last played on 4 Oct, 2024
Achievement Progress   0 of 107
76561199071949062 22 May, 2023 @ 2:28pm 
2896350181珈q唑嗳
76561198426247816 22 May, 2023 @ 2:16pm 
2896350181珈q唑嗳
76561199147654672 26 Apr, 2023 @ 3:08pm 
妹妹三年没谈恋爱了 今天实在忍不住了 就单纯的想舒服一下 不影响生活 170 919 7632 (q)
屠夫哥哥不要追我 3 Jun, 2022 @ 6:54am 
哥哥加我🥵🥵🥵忍不住了,开导!





(sinx)' = cosx

  (cosx)' = - sinx

  (tanx)'=1/(cosx)^2=(secx)^2=1+(tanx)^2

  -(cotx)'=1/(sinx)^2=(cscx)^2=1+(cotx)^2

  (secx)'=tanx·secx

  (cscx)'=-cotx·cscx

  (arcsinx)'=1/(1-x^2)^1/2

  (arccosx)'=-1/(1-x^2)^1/2
Nemesis 15 Dec, 2021 @ 3:44pm 
hey, added
76561199042960277 6 Dec, 2021 @ 7:48am 
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