16(2)两个重要极限
October, 2004 1.6 (2) 两个重要极限
两个重要极限 1.重要极限m x→>0x SIn x f(x) 是偶函数 lim 是型 x→>0x 0 x->0x October 2004
October, 2004 二、两个重要极限 1. 重要极限 0 sin lim x x → x sin ( ) x f x x = 是偶函数 0 sin lim x x → x 是 型 0 0 0 sin lim ? x x → x =
1.5 y 1.2 0/b0 864 0.2 -0.2 -0 00 468 October 2004
October, 2004 sin x y x =
sIn x f( 02 0.4 It seems that I x→>0x October 2004
October, 2004 sin ( ) x f x x = 0 sin lim 1 x x → x It seems that =
因为x→0,设x满足 0<x|< 首先假定 0<x< 2 October 2004
October, 2004 因为 x →0, 设 x 满足 0 2 x 首先假定 0 2 x