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    Can someone help with any of these please??!!!!
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    (Original post by Lucyperks7)

    Can someone help with any of these please??!!!!
    Have you tried anything?
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    1: use implicit differentiation

    2: find dx/dy & then get dy/dx

    3: parametric differentiation: dy/dx = dy/dt divided by dx/dt
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    (Original post by RDKGames)
    Have you tried anything?
    Yes I’ve done most sorry, sounds stupid but I forgot how to do part 1(b) how to find the Y coordinate
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    (Original post by Lucyperks7)
    Yes I’ve done most sorry, sounds stupid but I forgot how to do part 1(b) how to find the Y coordinate
    Sub in x=2 and then solve for y
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    Does y = 1/2, therefore gradient will = 23/16?
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    (Original post by the bear)
    1: use implicit differentiation

    2: find dx/dy & then get dy/dx

    3: parametric differentiation: dy/dx = dy/dt divided by dx/dt
    So for question 2, is the answer 1/3sec^2 3y
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    (Original post by Lucyperks7)
    So for question 2, is the answer 1/3sec^2 3y
    yes... dy/dx = 1/{3sec2 3y}

    which can be written another way because sec y ≡ 1/cos y
 
 
 
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