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    HI,
    bit stuck on this question!
    A curve has parametric equations
    x=cost y =sinsquared 2t find the Cartesian equation. (3marks)


    any help would be appreciated thanks
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    (Original post by ALEGG)
    HI,
    bit stuck on this question!
    A curve has parametric equations
    x=cost y =sinsquared 2t find the Cartesian equation. (3marks)


    any help would be appreciated thanks
    Think about identities you know for sin^2(2t) (which you can also write as (sin(2t))^2
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    (Original post by ALEGG)
    HI,
    bit stuck on this question!
    A curve has parametric equations
    x=cost y =sinsquared 2t find the Cartesian equation. (3marks)


    any help would be appreciated thanks
    please post your attempt
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    (sin2t)^2=1-(cos2t)^2
    Y=1-(cos2t)^2
    cos2t= 2(cost)^2 - 1
    y=1-(2(cost)^2-1)^2
    y=1-(2x^2 -1)^2
 
 
 
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