高考复习方案2016届高考数学（理科浙江专用）二轮专题复习专题限时集训：（二）函数、基本初等函数ⅰ的图像与性质a word版含答案.doc

1、 1 f(x) 1 lg x 2 x ( ) A. ( 2 B (0 1) ( 1 2 C. ( 0 2 D (0 2) 2 f(x) ax 2 bx 2a b a 1 2a a b ( ) A 1 3B. 1 3C 0 D 1 3 ( 0) ( ) A f(x) x 2B f(x) 2 |x|C f(x) log 2 1 |x|D f(x) sin x 4 6 / 25 ( ) t s s 1 2 t 2 ( ) A 7 B 9 C 14 D 7 5 a R f(x) x 2 x x 0 x 2 ax x0 f( 1) _ a _ 6 f(x) ax 1 x 2 ( 2 ) a ( ) A

2、. 1 2 B 1 2 C. 1 2 D 1 2 7 f(x) 1 2a x 3a x2 _ 13 f(x) x 1 0 xb 0 f(a) f(b) b f(a) _ 14 f(x) ax 2 bx 3 4 (a0) g(x) 4 x 2 x b 1 4 y f x 1 4a A x|t 1 x t 1 (1) t b 2a f(x) A M N M N (2) t x 1 x 2 A | | f x 1 f x 2 g(x) x 0 1 a 15 f(x) x 2 |x 1 a| a (1) f(x) 1 2 1 2 (2) x R f(x) 2|x a| a 16 f(x) x a x

3、4 g(x) kx 3. (1) a 3 4 f(x) 1 m f(m) m (2) a 1 2 |f(x 1 )| |f(x 2 )|0 lg x 0 2 x 0 0 1 2 . 7 C 解析 f(x) R 1 2a0 ln 1 1 2a 3a a1 x2 x 0 x 12 x2 x1 x0) t b 2a 1 4a A x 1 4a 1 x 1 4a 1 M f 1 4a 1 f 1 4a 1 a 3 4 1 16a N f 1 4a 3 4 1 16a M N a. (2) x 0 1 2 x 1 2 g(x) (2 x ) 2 2 2 x 1 4 (2 x 1) 2 3 4 g(x)

4、1 4 . A x 1 x 2 | | f x 1 f x 2 1 4 A f(x) max f(x) min 1 4 . t t b 2a (1) a 1 4 . a 1 4 f(x) 1 4 (x 1) 2 1 t 1 t 1 x 1 x 2 | | f x 1 f x 2 1 4 t 1 f(x) t t 1 | | f x 1 f x 2 max f(t 1) f(t) 1 2 t 1 4 1 4 t 1 4 . a 1 4 . 15 解：(1) a 1 1 2 a 1 2 f(x) x 2 x 1 a x 1 2 2 a 3 4 f(x) 1 2 1 2 a 1 1 2 a 3 2

5、 f(x) x 2 x 1 a x 1 2 2 a 5 4 f(x) 1 2 1 2 1 2 2|x a| x R a x a 1 x 2 x 1 a2(a x) x 2 x 1a x 1 2 2 5 4 a. a 1 1 2 a 1 2 x 1 2 2 5 4 a x R aa x R a0 a1 2 a2(a x) x 2 3x 13a x 3 2 2 5 4 3a. a 13a x R 3a3a x R 3a (a 1) 2 3(a 1) 1 a 2 2a 1 0 a 1 2 a 1 2 1 2 a 1 2 a 1 2. a3a x R 3aa x 2 x 1 a2(x a) x 2 x 1 a x 1 2 2 3 4 a a 3 4 . 3 4 2|x a| x R a 3 4 1 a k 1 2 4 a 1 k 1 2 a 4 a 1 max 2 3 11 F(x) (1 k)x a x 7 (2 4 a 4 k1 k1 a 1 k 2 4 a 1 1 k 2 a 4 a 1 min 1 2 k 2 2 2. k 6 4 3.