I
1.1. A (1, 1), B C (2, 2), D (0, 1), E (3, 0), F (2, 0), G (0, 1), H (1, )
1.2. .
1.3. . ( , ):
1) ρ = 2; 2) ; 3) ρ = 2sin φ.
1.4. , ( ):
1) 2) 3)
II
2.1. ,
.
2.2. . .
2.3. , , (4, 0) (1, 0).
2.4. , xOy:
1) 2)
3)
III
3.1. , , F 1(2, 2) F 2(2, 2) 4.
3.2. x 2 + y 2 2 x = 0, Ox , .
3.3. , , (5, 0).
3.4. . :
1) ρ 2 = sin φ; 2) ρ = cos φ + sin φ;
3) ρ 2cos φ sin φ = 1; 4) ρ 2 2 ρ cos φ 3 = 0.
1. L xOy , - -
(15)
(15) - L.
2. , , ,
3. , , , , , :
(16)
4. L Ox, k L L :
y y 0 = k (x x 0).
, M 0(0, b) L Oy, :
y = kx + b.
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5. L , M 0(x 0, y 0) M 1(x 1, y 1) : , :
(17)
6. L , . . M 0(a, 0) M 1(0, b), :
7. ,
:
A (x x 0) + + B (y y 0) = 0
Ax + By + C = 0, (18)
C = Ax 0 By 0.
(18) L.
8. , ..
L :
x cos α + y cos β p = 0,
p > 0 .
δ (M 0, L) = x 0cos α + y 0cos β p, 0 L. δ < 0, M 0 O (0, 0) L, δ > 0 . d (M 0, L) .
M 0(x 0, y 0) L: Ax + By + C = 0 :
(19)
, :
k 1 k 2 .
:
L 1 L 2 , .
ρ cos(φ φ 0) = p,
p , , φ 0 .
1. ABC: A (1, 2), B (1, 3), C (2, 1). :
1) BC;
2) AH ;
3) BM;
4) BM AH;
5) .
. 1. BC B, C , (17). B (1, 3), C (2, 1), :
, :
2(x + 1) = 3(y + 3) 2 x 3 y 7 = 0.
, :
2 x 3 y 7 = 0.
2. AH : =(2; 3), .. . . , AH, (16), :
(20)
(1, 2) .
, , (19):
3. , AC:
M (3/2, 1/2). BM B (1, 3) M (3/2, 1/2), (17):
|
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.
,
7 x 5 y 8 = 0.
4. φ BM AH ,
.
5. M (x, y) AB. d (M, AB) = d (M, AC). .
.
,
.. .
(19):
,
.
.
, ( ):
2. A (3, 8) B (2, 2). Ox M, .
. , : . AB ¢ (. 11) Ox, B ¢ , Ox ( A ¢ B Ox, A ¢ , Ox).
. 11
B ¢(2, 2) A (3, 8) A B ¢:
, .. .
, :
:
, (1, 0) .