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    christinsarah1's Avatar
    christinsarah1 Posts: 6, Reputation: 1
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    #1

    Oct 10, 2013, 07:24 AM
    maths
    Evaluate the center, vertices, foci,length of major axis and the equation the directrices of the curve:
    (x-1)^2/16 - (y-3)^2/9 = -1


    Isn't this a hyperbola? Which form should be used here? That of conjugate hyperbola?
    bellabella2314's Avatar
    bellabella2314 Posts: 7, Reputation: 1
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    #2

    Oct 14, 2013, 10:43 PM
    I'm pretty sure the answer to that question is (x−1) 1/8 − (y−3) 2/9
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