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Jika g(x) = 2x – 5 dan f(x) = x2 – x + 3. Fungsi komposisi (gof)(x) =

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Jika g(x) = 2x – 5 dan f(x) = x2 – x + 3. Fungsi komposisi (gof)(x) = ….

Pembahasan:

g(x) = 2x – 5

f(x) = x2 – x + 3

(gof)(x) = …. ?

(gof)(x) = g(f(x))

             = 2(x2 – x + 3) – 5

             = 2x2 – 2x + 6 – 5 

(gof)(x) = 2x2 – 2x + 1

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