M(X ;Y) (E) X22 Y22A + B = 1 X22 ( Y)2 2A B 1A1(–A;0), A2(A;0), B1(0;–B), B2 (0;B) GỌI LÀ CÁC M1(X ; – Y) (E)
1) M(x ;y) (E) x
2
2
y
2
2
a + b = 1 x
2
2
( y)
2
2
a b 1
A
1
(–a;0), A
2
(a;0), B
1
(0;–b), B
2
(0;b) gọi là các
M
1