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    Name:  IMG_0469.jpg
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Size:  456.5 KB could someone please explain questin 8 for me in detail i dont understand how to even start it.
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    Couldn't you even be bothered to rotate the image?

    Find dy/dx and set it equal to 1/3.
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    (Original post by Ganhad)
    Name:  IMG_0469.jpg
Views: 175
Size:  456.5 KB could someone please explain questin 8 for me in detail i dont understand how to even start it.
    - You need to differentiate implicitly to find an equation involving dy/dx, which will be equal to zero as the derivative of 84 is 0.

    - Now, substitute 1/3 in for dy/dx immediately instead of rearranging for dy/dx.

    - After simplifying, substitute back into the equation of the curve to get nice values for x. These are the x coordinates of A and B, and you can easily deduce the y coordinates.

    - Once you've done all that, use each point in turn (with gradient 1/3) to find the equations of the tangents.
 
 
 
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