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    Hey.
    Im having trouble doing questions (iii) and (iv).

    I was able to do part ii and express in the form (x + a)^2 + b
    But i dont understand how to get the translation.
    I was only able to do part (iv) by differentiation to find the gradient, then find the formula that way.
    Thanks


    https://a9497d7f220e174d38d014b2b1d8...20C1%20OCR.pdf
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    (Original post by SamuelN98)
    Hey.
    Im having trouble doing questions (iii) and (iv).

    I was able to do part ii and express in the form (x + a)^2 + b
    But i dont understand how to get the translation.
    I was only able to do part (iv) by differentiation to find the gradient, then find the formula that way.
    Thanks


    https://a9497d7f220e174d38d014b2b1d8...20C1%20OCR.pdf
    We want to translate y = x^2 + 2 to y = (x-3)^2 + 2 so we basically want the bit in the bracket to change from x to x-3.

    i.e: if f(x) = x^2 + 2 then f(x-3) = (x-3)^2 + 2. What does the translation f(x-3) mean?

    For (iv) think about what happens to the tangent.
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    (Original post by thefatone)
    Zacken help i have no idea what i'm doing either xD

    since you already put  y=x^2-6x+11 in the form (x + a)^2 + b \left(x-3\right)^2 +2 i'm seeing the only difference which i'm seeing between the 2 equation is a -6x , not sure what to say for transformation

    tbh i did part 4 by differentiation aswell ^-^
    See my post above.
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    (Original post by Zacken)
    See my post above.
    dammit got ninja'd twice xD
    i was gonna ask for help then you quote me xD

    ok thanks
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    (Original post by Zacken)
    We want to translate y = x^2 + 2 to y = (x-3)^2 + 2 so we basically want the bit in the bracket to change from x to x-3.

    i.e: if f(x) = x^2 + 2 then f(x-3) = (x-3)^2 + 2. What does the translation f(x-3) mean?

    For (iv) think about what happens to the tangent.
    Thanks.
    Does the f(x) for transformation follow a similar rule for stretches in the axis
    Is f(2x) a stretch scale factor 1/2 in the x direction?
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    (Original post by SamuelN98)
    Thanks.
    Does the f(x) for transformation follow a similar rule for stretches.
    Is f(2x) a stretch scale factor 1/2 in the x direction?
    Yep.
 
 
 
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