In each of the, find the equations of the hyperbola satisfying the given conditions.
Foci (0, ![]()
), passing through (2, 3)
Foci (0, ![]()
), passing through (2, 3)
Here, the foci are on y-axis.
Thus,
The equation of the hyperbola is of the form ![]()
Since, the foci are (
, 0), c = ![]()
We know that, a2 + b2 = c2
⇒ b2 = 10 – a2 …………..(1)
Since, the hyperbola passes through point (2, 3)
……………(2)
From equations (1) and (2), we get,
![]()
⇒ 9(10 – a2) – 4a2 = a2(10 –a2)
⇒ 90 – 9a2 – 4a2 = 10a2 – a4
⇒ a4 -23a2 + 90 = 0
⇒ a4 -18a2 -5a2+ 90 = 0
⇒ a2(a2 -18) -5(a2 -18) = 0
⇒ (a2 – 18)(a2 -5) = 0
⇒ a2 = 18 or 5
In hyperbola, c>a that is c2> a2
Thus, a2 = 5
⇒ b2 = 10 – a2 = 10 – 5 = 5
Hence, the equation of the hyperbola is ![]()