Ax + By + z + D =
Am + Bn + = 0.
, :
Ax +By + Cz + D + λ(A1 x +B1 y + C1 z+ D1) =0
. , (1, 2, 1)
:
, ( 1, 2, -1), (-1)+(-1)+(z-z1)= 0 (- 1 )+(- 2 )+(z+ 1 )= 0
, , , , . . 1, -3 4,
1 (- 1 ) -3 (- 2 ) +4 (z+ 1 )= 0. x - 3 + 4 z+9= 0.
.
1. . , .
( - )2 + (y - b)2 = r2
a b , a r .
,
x2 + y2 = r2
2. . , () ( , ).
, b .
2 , , b ( > b)
2 - b 2 = 2.
,
< 1 ( < ), .
3. . , () ., , .
- , b .
2 , , b
a2 + b2 = 2
b = .
x2 - y2 = a2
.
= .