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Math Help - parametric derivative

  1. #1
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    parametric derivative

    At time t, the position of a particle moving on a curve is given by
    x=e^(2t)-e^(-2t) , y=3e^(2t)+e^(-2t)

    (a) Find the value of t at which the curve has a horizontal tangent.
    t =

    (b) Find dy/dx in terms of t.
    dy/dx =

    (c) Find .

    can somone help me do this one...plzzzzz...thanks....

    mathation
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  2. #2
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    it would be wise to find b before a. setting the derivative = 0 will give the horizontal tangent
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  3. #3
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    \frac{dy}{dx}=\frac{dy/dt}{dx/dt}
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