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7 January, 13:48

Let f (x) = x / (x-6). Find a function y=g (x) so that (f o g) (x) = 2x.

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  1. 7 January, 14:28
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    Solve as a simultaneous equation maybe?

    f (x) + g (x) = 2x or x / (x-6) + y = 2x

    and then solve so it becomes 2x^2 + 5x = y

    then factorise into brackets or use quadratic formula
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