2
2 . , , , .
Ax2 + By2 + Cz2 + 2Fyz + 2Gzx + 2Hxy + 2Px + 2Qy + 2Rz + D = 0,
x, y, z − , A, B, C,... − .
2 . e E, E e
# (e) (E) Δ k
1 3 4 < 0
2 3 4 > 0
3 3 4 > 0
4 3 4 < 0
5 3 3
6 3 3
7 2 4 < 0
8 2 4 > 0
9 2 3
10 2 3
11 2 3
12 2 2
13 2 2
14 1 3
15 1 2
16 1 2
17 1 1
.
. , .
_
. , a > 0, b > 0, c > 0, , ,
,
,