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tmagloire1

  • one year ago

AP Calculus AB Help!!! please help me on these two questions 1.For the curve given by 4x^2+y^2=48+2xy find the positive y-coordinate given that the x-coordinate is 2. 2.For the curve given by 4x^2+y^2=48+2xy show that there is a point P with x-coordinate 2 at which the line tangent to the curve at P is horizontal.

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  1. tkhunny
    • one year ago
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    Have you considered substituting x = 2 and solving for y?

  2. tmagloire1
    • one year ago
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    Is it that simple? I thought I might have to differentiate implicitly but i wasn't really sure where to start.

  3. tmagloire1
    • one year ago
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    Would plugging in x=2 work? or should i do the latter

  4. tmagloire1
    • one year ago
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    anyone?

  5. tkhunny
    • one year ago
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    No differentiation. There is no such thing as "plugging in". Try substitution.

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