二次函数经典习题.pdf

o g gn g g g 1 f x ax2 bx c a N b c Z a b 2a 3 1 1 3x f x b b f x x 0 3 0 1 S a 2 f x ax2 bx c a N b N c Z tid 2513282 a eb 2a f sinx x R 2 4 f x b x 4x 6 f x 6 2 x2 1 3x0 f x0 2 tid 2513282 tid 2271466 tid 249277 a y x1 x2 f f x x b eog f f x x x3 x4 x3 x4 x1 x2 x3 x4 c y f x3 x4 f x4 x3 d x5 x6 f f x f x y x5 x6 ex5 0 f x x x1 x2 tid 2513282 tid 405823 a ex1 2 x2 1 b XJ0 x1 b c k A m1 f m1 B m2 f m2 vf 1 0 a2 f m1 f m2 a f m1 f m2 0 tid 2513282 a y b 0 b ef x x x1 0 x2 0 x1 b c f 1 0 tid 2513282 a f m a y f m 3 b k v a m 7 g f x ax2 bx c a 0 x k ef c 0 0 x 0 tid 349258 jyeoo a 1 a c b y 2 b 1 t 0 a t 2 b t 1 c t 0 8 a b c v a m 2 b m 1 c m 0 m uf x ax2 bx c ypsandfsc a XJa 6 0 y af m m 1 0 f x x 0 x1 x2 v0 x1 x2 1 a 2 a x 0 x1 y x f x x1 b f x u x x0 y x0 0 ax2 bx c 0k y max a b c 4 a b c 9 11 X g ax2 bx c 0 k y tid 2363827 tid 388 a max a b c 4 9 a b c b min a b c 6 1 4 a b c 12 f x x2 bx c b c f x x 0 x1 x2 vx1 0 x2 x1 1 a y b2 2 b 2c b 0 t 0 y f x f 1 x 1 b e x1 x2 x3 vx1x2x3 1 y f x1 f x2 f x3 1 15 x R g f x ax2 bx c K a 0 y tid 670400 a f x 0k b 2 b a 1 c x1 x2 f x 0 K 3 3 6 x1 x2 6 2 3 18 f x x2 ax b gn x R 3y R f y f x y a tid 666851 19 e f x x2 ax b 0 a b v X 3 n f n 6 1 4 tid 603668 20 g f x ax2 bx c m n m 0 b 3 t t m t n t f x 0 3 0 1 x k tid 297066 tid 249617 y 3 a b 2c a c b f 0 f 1 b c f 1 0 y f x x k b y e x1 x2kx1 1 tid 504722 a e f x 1 a a b ef x 3 m 2 x1 x2 1 a 1 ok f x1 f x2 6 4 a 24 f x ax2 bx c e f 1 6 1 f 1 6 1 f 0 6 1 y 1 6 x 6 1 k f x 6 5 4 tid 386959 254838780 25 ea R f x ax2 x a x 6 1 tid 354876 a e a 6 1 y f x 6 5 4 b f x k 17 8 a 26 1993 29 ux X g ax2 bx c 0k y a XJ 2 2 o2 a 4 b b 4 b XJ2 a 4 b b 4 o 2 0 x 6 1 f x 6 1 tid 151216 a x 6 2 f x 6 7 b x 6 1 2ax b 6 4 c x 6 2 cx2 bx c 6 2 29 1996 25 a b c f x ax2 bx c a 6 0 g x ax b 1 6 x 6 1 f x 6 1 tid 2513282 tid 257086 a y c 6 1 b 6 1 b