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Mathematics
Mathematics
Problem
If
S
S
S
and
S
′
S'
S
′
are the foci of the ellipse
x
2
18
+
y
2
9
=
1
\frac{x^2}{18} + \frac{y^2}{9} = 1
18
x
2
+
9
y
2
=
1
and
P
P
P
be a point on the ellipse, then
min
(
S
P
⋅
S
′
P
)
+
max
(
S
P
⋅
S
′
P
)
\min (SP \cdot S'P) + \max (SP \cdot S'P)
min
(
S
P
⋅
S
′
P
)
+
max
(
S
P
⋅
S
′
P
)
is equal to :
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