If the distance from a point P on the hyperbola x2 / 25-y2 / 9 = 1 to one focus is 15, then the distance from it to another focus is 15
|Pf1-15 | = 10 Pf1 = 15 ± 10 Pf1 = 5 or Pf1 = 15
RELATED INFORMATIONS
- 1. On hyperbola x2 − y216 = 1, the distance from a point P to one of its focal points is equal to 4, then the distance from point P to another focal point is equal to 4______ .
- 2. On the hyperbola x2 / 16-y2 / 9 = 1, a point P makes it twice as far from the left focus as it is from the right focus
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- 7. The two foci F1, F2, P of hyperbola (x ^ 2) / 4 - (y ^ 2) / (b ^ 2) = 1 (B ∈ n *) are a point on the hyperbola, / op / < 5, / Pf1 /, / F1F2 /, / PF2 / are in equal proportion sequence, and the equation of the hyperbola is obtained
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- 15. Let {an} be an equal ratio sequence with the first term of 1 and the common ratio of - 2, then a1 + | A2 | + a3 + | A4|
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- 18. If the sequence {an} satisfies that A1, a2-a1, a3-a2,... Are equal ratio sequences with 1 as prime minister and 3 as common ratio, then an______
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