函数的极限

函数的极限

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Unformatted text preview: 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 § 1 函函函函函函 函函 x 函函函函函函函函函 函函 x 函函 x 函函函函函函 函函函函函函 函函函 , 函函函函函函函函函函函函 函函 , 函函函函函函函函函函函函函 . 函函函函函函函函函函函函函函函函 函函函函函函函 . 函函函函函函函函函 , 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 函函 x 函函函函函函函函函 返返返 返返返 ) ( x f [ 29 ∞ + , a A ) ( x f x y O 返返 . +∞ f ( x ) 返 x 返返 返返 A 返 返返返返返返 A , 返返返返 返返返返返返返 , 返返 f ( x ) 返 , 返 x 返返 x 返返返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 x 返返 返返 返返 , arctan x y = 返 返 , ∞ + x y π 2 10 20 30 40 O 0.5 1 返返返 . 返 x arctan π 2 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 lim ( ) x f x A →+∞ = ). ( ) ( + ∞ → → x A x f 返返 , 返返返返返返返 返返 返返 返 ε 返 ) ( a M ≥ , ) ( ε <- A x f A x x f 返返 返返 返 ∞ + ) ( ? ? ? ? . 返返返 , ? M x 函 返返 1 [ 29 . , ? ? ? ? ? ? ? ? ? ? ? + ∞ a f A 返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 ④ ( ) A f x A ε ε 返- < < + lim ( ) x f x A →+∞ = 返返返返返 ③ x M 返返返 x A ε- A ε + ① 返返返返 ε M ② 返返 M a A x y O a 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 ④ ( ) A f x A ε ε 返- < < + lim ( ) x f x A →+∞ = 返返返返返 ③ x M 返返返 x A ε- A ε + ① 返返返返 ε M ② 返返 M a x A y O a 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返 返返返返返返返返返返返返返返返返 . 返返返 返返 ( 返返返 1), 返 1 返返 . 1 lim = + ∞ → x x 返返 返 返 , ε , 1 ε = M , ? ? M x , 1 ) ( ε < =- x x f . 1 lim = + ∞ → x x 返返返返 . 返返返返返返返返返返返返返返返返返返返返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返 2 . 2 arctan lim π = + ∞ → x x ? ? 返 返返 ), 2 ( π ε ε < ). 2 tan( ε π- = M ? 返返返返 π lim arctan . 2 x x →+∞ = ? , ? M x ? ? ? , ? ? x arctan ππ ( ) arctan 2 2 f x x- =- ππ ( ) . 2 2 <-- = ε ε 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 返返 , ) ( ε <- A x f 返返 2 ( ] , , ) ( ? ? ? ? ? b x f ∞- . ? ? ? ? ? A , ε , M ? ? ( ) x M b < - < 当当 ? ? ? ? ?...
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函数的极限

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