113 6565% 2

1.

240

(1) 31 (2) 120 (3) 130 (4) 185 (5) 218

2

97-4 O 0 9 4AA1234 , AB4434 AO1234 ,AB3444 A 4 (1) (2) (3) 25 900 (4) 25 990 (5) 25999

A425,1000(1)4(5)4444(2),4(3), 4(4) 1000,4

3

94-9 (1) (2) (3) (4)

(5)

(1) (2)(3)

(4)

(5)

4

1. P(x, y) (1) P F1(1, 2)F2(3, 4) (1) (2) (3) (4) (5) x y yxOF1(1, 2)F2(3, 4) P(x, y)< 91 >91-1

5

= (4x2+4) + (x2+2x+1)(x3) + (x33x2+3x1) (5)= 2x3 2x= (4x2+4) + (x33x2+2x26x+x3) + (x33x2+3x1)= 2x(x21)= 2x(x+1)(x1)< 100 >100-2

f(x)f(0);f(1);f(-1)(1)(2)(4)f(2)(5)

6

97-3a1,a2,a3,b1,b2,b3 (1) a1a3 (2) b1b3 (3) a1+a2

(1),,,(2),b1=-1,r=-1 (3),a1=-1,d=-1 (4),

7

92-5At 100(1 2 kt)k0370T99T (1) 5(2) 7 (3) 9(4) 11 (5) 13

f (t) 100(12 kt)f (3)100(1 2 3k) 70 1 2 3k 2 3k f (T) 100(1 2 kT) 99 1 2 kT 2 kT

T=9, T=12,

...

******