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23 May, 13:17

If f (x) = 3x, g (x) = x-3, and h (x) = square root of x, find (fogoh) (25)

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  1. 23 May, 16:02
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    (f o g o h) (x) = f { g [ h (x) ] }

    Which means: apply first function h, then apply function g to the result, and finally apply function f to the new result.

    h (25) = √25 = 5

    g (5) = 5 - 3 = 2

    f (2) = 3 (2) = 6.

    Answer: 6
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