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Diketahui f(x) = x + 4, g(x) = 2x + 1, dan h(x) = x2 – 3x + 2. Nilai (g o h o f)(-2)

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Diketahui f(x) = x + 4, g(x) = 2x + 1, dan h(x) = x2 – 3x + 2. Nilai (g o h o f)(-2)!

Pembahasan:

(g o h o f)(-2) = …. ?

f(-2) = -2 + 4 = 2

(h o f)(-2) = h(f(-2))

                 = h(2)

                 = 22 – 3(2) + 2

(h o f)(-2) = 0

(g o h o f)(-2) = g(h o f)(-2)

                       = g(0)

                       = 2(0) + 1

(g o h o f)(-2) = 1

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