retaW
Philadelphia, Pennsylvania, United States
 
 
:morphine:
Currently In-Game
Counter-Strike 2
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4,546 hrs on record
Currently In-Game
8.6 hrs on record
last played on 20 Jan
2,492 hrs on record
last played on 17 Jan
100 XP
[HAN] Sion 18 Nov, 2022 @ 8:24am 
在吗?我QQ空间里农场的狗死了 你能过来当两天吗
2350712385 28 Jun, 2022 @ 8:55pm 
我超!
太烧了!
遭不住了!
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
  (arctanx)'=1/(1+x^2)
  (arccotx)'=-1/(1+x^2)
  (arcsecx)'=1/(|x|(x^2-1)^1/2)
  (arccscx)'=-1/(|x|(x^2-1)^1/2)
  ④(sinhx)'=coshx
  (coshx)'=sinhx
  (tanhx)'=1/(coshx)^2=(sechx)^2
  (coth)'=-1/(sinhx)^2=-(cschx)^2
  (sechx)'=-tanhx·sechx
  (cschx)'=-cothx·cschx
  (arsinhx)'=1/(x^2+1)^1/2
  (arcoshx)'=1/(x^2-1)^1/2
  (artanhx)'=1/(x^2-1) (|x|<1)
  (arcothx)'=1/(x^2-1) (|x|>1)
  (arsechx)'=1/(x(1-x^2)^1/2)
  (arcschx)'=1/(x(1+x^2)^1/2)
2350712385 26 Jun, 2022 @ 10:22pm 
孙哥有兴趣做一期读粉丝评论吗
LKING 6 Sep, 2021 @ 7:55am 
-rep 恶心的黑人男同性恋
风暴斗篷 25 Apr, 2021 @ 5:49pm 
在吗?我QQ空间里农场的狗死了 你能过来当两天吗
大白鲨 26 Jan, 2021 @ 10:12am 
有考虑跟我去大鸟转转转酒吧喝一杯吗