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Mathematics
Problem
In the relation
(
x
+
c
)
2
+
y
2
+
(
x
−
c
)
2
+
y
2
=
2
a
\sqrt{(x+c)^{2}+y^{2}}+\sqrt{(x-c)^{2}+y^{2}}=2a
(
x
+
c
)
2
+
y
2
+
(
x
−
c
)
2
+
y
2
=
2
a
that defines an ellipse, what does the symbol
a
a
a
represent? a) Length of the semi-minor axis b) Distance of each focus from the centre c) Length of the semi-major axis d) Length of the entire major axis
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