(14分)已知函数f(x)是 ( x R)的反函数,函数 g ( x )的图象与函数 的图象关于直线 x =-2成轴对称图形,设F( x )= f ( x )+ g ( x ). (1)求函数F( x )的解析式及定义域; (2)试问在函数F( x )的图象上是否存在两个不同的点A,B,使直线AB恰好与 y 轴垂直?若存在,求出A,B坐标;若不存在,说明理由.
【多选题】Training is a controlled practice after the presentation of linguistic items. This practice is strictly controlled by a teaching and usually takes the form of pattern drills. Which of the following dr...