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Determine the equation of the hyperbola which satisfies the given conditions: Foci (0, ±13), the conjugate axis is of length 24. |
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Answer» Answer: Solution: Given that: Foci (0, ±13), Conjugate axis length = 24 It is noted that the foci are on the y-axis. Therefore, the equation of the hyperbola is of the form: (y2/a2)-(x2/b2) = 1 …(1) Since the foci are (0, ±13), we can GET C = 13 It is given that, the length of the conjugate axis is 24, It becomes 2b = 24 b= 24/2 b= 12 And, we KNOW that a2 + b2 = c2 To find a, substitute the value of b and c in the above equation: a2 + 122 = 132 a2 = 169-144 a2 = 25 Now, substitute the value of a and b in equation (1), we get (y2/25)-(x2/144) = 1, which is the required equation of the hyperbola. |
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