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31 December, 10:03

F (g (x)) = x+1 และ f (x) = x-1 หาg (x)

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  1. 31 December, 12:54
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    Let's do this: start with f (x) = x - 1. Now substitute the label "g (x) " for x:

    f (g (x)) = g (x) - 1 and we are told that f (g (x)) equals x + 1.

    Thus, g (x) - 1 = x + 1

    Adding 1 to both sides, we get

    g (x) = x + 2 (answer)
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