In each of the following find the equations of the hyperbola satisfying the given conditions

foci , passing through (2, 3)

Given: passing through (2, 3)


To find: equation of the hyperbola


Formula used:


The standard form of the equation of the hyperbola is,



Coordinates of the foci for a standard hyperbola is given by (0, ±be)


According to the question:



b2e2 = 10


Since (2, 3) passing through hyperbola


Therefore,





{ a2 = b2(e2 – 1)}








90 – 13b2 = (10 – b2)b2


90 – 13b2 = 10b2 – b4


90 – 13b2 – 10b2 + b4 = 0


b4 – 23b2 + 90 = 0


b4 – 18b2 – 5b2 + 90 = 0


b2(b2 – 18) – 5(b2 – 18) = 0


(b2 – 18)(b2 – 5) = 0


b2 = 18 or 5


Case 1: b2 = 18 and b2e2 = 10


a2 = b2(e2 – 1)


a2 = b2e2 – b2


a2 = 10 – 18


a2 = – 8


Hence, equation of hyperbola is:






Case 2: b2 = 5 and b2e2 = 10


a2 = b2(e2 – 1)


a2 = b2e2 – b2


a2 = 10 – 5


a2 = 5


Hence, equation of hyperbola is:




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