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Mathematics
Mathematics
Problem
The foci of a hyperbola are at
(
±
9
,
0
)
(\pm 9,0)
(
±
9
,
0
)
and the length of its transverse axis is
12
12
12
. Which of the following is its equation? a)
x
2
45
−
y
2
36
=
1
\dfrac{x^{2}}{45}-\dfrac{y^{2}}{36}=1
45
x
2
−
36
y
2
=
1
b)
y
2
36
−
x
2
45
=
1
\dfrac{y^{2}}{36}-\dfrac{x^{2}}{45}=1
36
y
2
−
45
x
2
=
1
c)
x
2
36
−
y
2
45
=
1
\dfrac{x^{2}}{36}-\dfrac{y^{2}}{45}=1
36
x
2
−
45
y
2
=
1
d)
x
2
36
−
y
2
81
=
1
\dfrac{x^{2}}{36}-\dfrac{y^{2}}{81}=1
36
x
2
−
81
y
2
=
1
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