1、 1 2 3 4 5 1 1.1 A 1 1.2 2 2.1 2.2 2.3 6 2.4 3.1 1 x 2 3 3.2 1 2 3.3 1 2 4 4.1 4.2 1 1 2 -x =4 2 2 -x =x 2 x 2 -2x-3=0 x 2 -2x+1=0 x 2 -2x+3=0 x1=-1 x2=3 x1=x2=1 y=x 2 -2x-3 y=x 2 -2x+1 y=x 2 -2x+3 7 x (-1,0) (3,0) (1,0) 1 0 0 0 ax 2 +bx+c=0 (a0) x1 x2 x1 = x2 y=ax 2 +bx+c (a0) x (x1,0) (x2,0) (x1,0
2、) 2 x x 3 3 y 2x 4 y 2 x 8 y ln(x 2) y (x 1)(x 2)(x 3) x f(x) 0 y f(x) x 4 8 y f(x) f(x) 0 x y f(x) f(x)=x(x 2 16) D A (0 0) (4 0) B 0 4 C ( 4 0) (0 0) (4 0) D 4 0 4 f(x) 0 5 4 1 f(x) 0 y f(x) x y f(x) 2 22 (1) ( ) 3 4 (2) ( ) lg( 4 4) f x x x f x x x 6 5 y f(x) a b 1 f(x) x 2 2x 3 -2 1 _ f(-2)=_ f(
3、1)=_ f(- f(1)_0 (2 4) _ f f(4)_0 2 9 (a b) _( / ) f(a f(b) _ 0 (b c) _( / ) f(b f(c) _ 0 (c d) _( / ) f(c f(d) _ 0 7 y f(x) a b f(a) f(b) 0 y f(x) (a b) c a b) f(c) 0 c f(x) 0 1 f(x)=log2x x 1 2 2 2 f(x)=e x-1 +4x-4 x 1 8 1 1 y=f(x) a b f(a f(b)0 f(x) (a b) 2 y=f(x) a b f(a f(b f(x) (a b) 3 y=f(x) a b f(a f(b)0 f(x) (a b) 10 9 1 f (x) x f(x) x 1 2 3 4 5 6 7 f(x) 23 9 7 11 5 12 26 1 6 C A 5 B 4 C 3 D 2 2 x3 3x + 5=0 A ( 2 0) B (0 1) C (0 1) D (1 2) 1 2 3 11
