, .
г , ' x y L , - L , - , L, .
, , ' , , . г - .
.
,
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, :
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k . M (x 0 , y 0) , , . x 0 y 0 , :
.
b.
.
b :
.
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k - 0 X. , () , , :
,
M 1 M 2 , (), k b . ³ , k,
.
ϳ k b
.
ϳ k b
.
.
, .
. г y = f(x) , .
. -
+ + = 0,
, , 2 + 2 ¹ 0. .
, :
- C = 0, ¹ 0, ¹ 0 ,
- = 0, ¹ 0, ¹ 0 { By + C = 0} - ,
- = 0, ¹ 0, ¹ 0 { Ax + C = 0} ,
- = = 0, ¹ 0 ,
- = = 0, ¹ 0 .
. (, ) , + + = 0.
M1(x1, y1, z1) M2(x2, y2, z2), , :
.
- , .
+ + = 0 :
, k.
|
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. =(a1, a2), a1 + a2 = 0
+ + = 0.
+ + = 0, ¹ 0, , , :
,
, , b .
+ + = 0 , ,
xcosj + ysinj - p = 0 .
, m× < 0.
, , j - , .
. y = k1x + b1, y = k2x + b2,
.
, k1 = k2.
, k1 = -1/k2.
. + + = 0 1 + 1 + 1 = 0 , 1 = l, 1 = l. 1 = l, .
.
. , 1(1, 1) = kx + b :
.
. (0, 0), + + =0
.
- , ,
.
, , , .
XYZ a K . a , x, y, z a, b g .
a M, K . , , r , : .
, , , , .
, - , , (A,B.C)
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. .
a b :
,
; , ,
:
, .
. , :
Ax + By + Cz + D = 0,
, , - .
:
= 0 ,
= 0 ,
= 0 z,
D = 0 ,
= = 0 ,
= = 0 z,
= = 0 yOz,
= D = 0 ,
= D = 0 ,
|
|
= D = 0 Oz,
= = D = 0 ,
= = D = 0 xOz,
= = D = 0 yOz.