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Standard VII
Mathematics
Question
Which of the following is an equation?
x
+
7
2
y
+
3
=
7
2
p
<
10
none of these
A
2
y
+
3
=
7
B
x
+
7
C
2
p
<
10
D
none of these
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The equation of the ellipse with focus (โ1, 1), directrix x โ y + 3 = 0 and eccentricity 1/2 is
(a) 7x
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(d) none of these