晓枫
 
 
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599 hrs on record
last played on 28 Dec, 2024
6.5 hrs on record
last played on 24 Dec, 2024
0.5 hrs on record
last played on 15 Dec, 2024
76561199497349731 15 May, 2024 @ 4:57pm 
+rep pretty good player <3
BUFF 20 Apr, 2024 @ 5:10pm 
💚💚💚💚/>  フ💚💚💚💚
     |  _  _|
     /`ミ _x 彡
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    /  ヽ   ノ
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 | ( ̄ヽ__ヽ_)_)
 \二つ加我兄弟
AnTi(Homa) 3 Feb, 2023 @ 1:59am 
我和闺蜜好无聊啊 看你打很厉害 可以一起玩吗 加qq 5 6 3 1 4 9 6 3 6
太烧了,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)
(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)
76561199059967481 19 Dec, 2022 @ 9:26pm 
. ∧_∧ 
( ºωº )つ━☆・*。
⊂|   |    ・゜+.
 しーJ   °。+ *´¨)
         .• ´¸.•*´¨) ¸.•*¨)
          (¸.•´ (¸.•'* ☆ 兄弟加我好友 ☆
76561199386521894 19 Nov, 2022 @ 7:29pm 
加我兄弟 :3