1. .
(3), (5), (-1), D(2/3), (-3/7), , . | ||
, : | ||
2.1 | ||
2.2 | ||
2.3 | ||
2.4 | ||
, : | ||
3.1 | x>2 | |
3.2 | x 3? 0 | |
3.3 | 12 x <0 | |
3.4 | 2x 3? 0 | |
3.5 | 3x 5 >0 | |
3.6 | 1 < x < 3 | |
3.7 | 2 < x < 3 | |
3.8 | ||
3.9 | ||
3.10 | ||
3.11 | ||
3.12 | x2 8x +15? 0 | |
3.13 | x2 8x + 15 >0 | |
3.14 | x2 + x 12>0 | |
3.15 | x2 + x -12? 0 | |
, : | ||
4.1 | (3) (11) | |
4.2 | (5) (2) | |
4.3 | (-1) (3) | |
4.4 | (-5) (-3) | |
4.5 | (-1) (-3) | |
4.6 | (-7) (-5) | |
, : | ||
5.1 | (3) =5 | |
5.2 | (2) =-3 | |
5.3 | (-1) =2 | |
5.4 | (-5) =-3 | |
5.5 | (0) =2 | |
5.6 | (2) =3 | |
5.7 | (-1) =5 | |
5.8 | (-5) =2 | |
, : | ||
6.1 | ||
6.2 | ||
6.3 | ||
6.4 | ||
6.5 | ||
6.6 | ||
6.7 | ||
6.8 | ||
6.9 | ||
6.10 | ||
6.11 | ||
6.12 | ||
l =AC/CB, : | ||
7.1 | (2), (6), (4) | |
7.2 | (2), (4), (7) | |
7.3 | (-1), (5), (3) | |
7.4 | (1), (13), (5) | |
7.5 | (5), (-2), (-5) | |
(-7), (-1), (1). l, , . | ||
l =1/2, () 12, 1(1) 2(2). | ||
, 12, 1(1) 2(2), l (l =1/2). | ||
, 1(1) 2(2). | ||
, , : | ||
12.1 | (3) (5) | |
12.2 | (-1) D(5) | |
12.3 | M1(-1) M2(-3) | |
12.4 | P1(-5) P2(1) | |
12.5 | Q1(3) Q2(-4) | |
, : | ||
13.1 | 1(3), 2(7) l =1/2=2 | |
13.2 | (2), (-5) l =/=3 | |
13.3 | (-1), D(3) l =CM/MD=1/2 | |
13.4 | (-1), (3) l =/=-2 | |
13.5 | (1), (-3) l =/=-3 | |
13.6 | (-2), (-1) l =/=-1/2 | |
(5) (-3). : | ||
14.1 | M, | |
14.2 | N, | |
(5) (19), . . | ||
, P(-25) Q(-9) . |
2.
|
|
(2; 3), (-5; 1), (-2; -3), D(0, 3); E(-5; 0), F(-1/3; 2/3). | ||
(2; 3), B(3; -1), C(-5; 1), D(-3; 2), E(-5; -1). | ||
(-3; 2), B(-5; 1), C(3; -2), D(-1; 1), E(-6; -2). | ||
, : | ||
20.1 | (2; 3); | |
20.2 | B(-3; 2); | |
20.3 | C(-1; -1); | |
20.4 | D(-3; -5); | |
20.5 | E(-4; -6); | |
20.6 | F(a, b); | |
, : | ||
21.1 | A(-1; 2); | |
21.2 | B(3; -1); | |
21.3 | C(-2; -2); | |
21.4 | D(-2; 5); | |
21.5 | E(3; -5); | |
21.6 | F(a; b); | |
: | ||
22.1 | A(3; 3); | |
22.2 | B(2; -4); | |
22.3 | C(-2; 1); | |
22.4 | D(5; -3); | |
22.5 | E(-5; -4); | |
22.6 | F(a; b); | |
, : | ||
23.1 | A(2; 3); | |
23.2 | B(5; -2); | |
23.3 | C(C(-3; 4); | |
, : | ||
24.1 | A(3; 5); | |
24.2 | B(-4; 3); | |
24.3 | C(7; -2); | |
, (x; y), : | ||
25.1 | xy>0; | |
25.2 | xy<0; | |
25.3 | x-y=0; | |
25.4 | x+y=0; | |
25.5 | x+y>0; | |
25.6 | x+y<0; | |
25.7 | x-y>0; | |
25.8 | x-y<0; |