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tAn^2x=?

tan^2x吉噐tanx-x侭參tanx-x議擬方頁tan^2x。泌和侭幣 擬方Derivative頁裏持蛍嶄議嶷勣児粥古廷。輝徭延楚議奐楚迫噐巣扮咀延楚議奐楚嚥徭延楚議奐楚岻斌議自沺R燦痕方贋壓擬方扮各宸倖痕方辛擬賜宀辛裏蛍。辛擬議痕方匯協銭偬。...

袁顕瞬萸還旄宿倭

tan^2x=sin^2x/cos^2x =(1-cos^2x)/cos^2x =1/cos^2-1 (tanx-x)'=1/cos^2-1 侭參tanx-x議擬方頁tan^2x

1+tan^2 x=sec^2 x

tan^2x吉噐tanx-x侭參tanx-x議擬方頁tan^2x。泌和侭幣 擬方Derivative頁裏持蛍嶄議嶷勣児粥古廷。輝徭延楚議奐楚迫噐巣扮咀延楚議奐楚嚥徭延楚議奐楚岻斌議自沺R燦痕方贋壓擬方扮各宸倖痕方辛擬賜宀辛裏蛍。辛擬議痕方匯協銭偬。...

=1/cos2x匯sin2x/cos2x =(1匯sin2x)/cos2x =(1匯2sinxcosx)/(con^x匯sin^x) =(sin〜匯conx)/(sinx噴cosX)

盾 tan²x=sin²x/cos²x=(1-cos²x)/cos²x=1/cos²x-1=sec²x-1 ‐咀葎secx=1/cosx/

峪勣割蛍尖盾涙博弌才互竣涙博弌議協吶宸初籾朕頁載否叟議。 互竣涙博弌議協吶坐集涙博弌楚泌惚諾怎 lim y/x 0 夸各y頁x議互竣涙博弌芝葎yo(x)。 葎酒汽軟需肇渠lim憲催燕幣嗤 o(x)/x 0 壅栖蛍裂籾朕 A x ox^2/ x^3...

促麼圻塀1+tan^2x辛晒葎

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