Dik : F(x) = x+1/x-3 G(x) = x(pangkat 2) +x+1 Tentukan : A). (goF)(x) B). (Fog)(x)
Matematika
RivaFS12
Pertanyaan
Dik :
F(x) = x+1/x-3
G(x) = x(pangkat 2) +x+1
Tentukan :
A). (goF)(x)
B). (Fog)(x)
F(x) = x+1/x-3
G(x) = x(pangkat 2) +x+1
Tentukan :
A). (goF)(x)
B). (Fog)(x)
2 Jawaban
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1. Jawaban amoyreny
a. gof (x) = g(f(x)) = g(x+1/x-3) = (x+1/x-3)^2 + (x+1/x-3) + 1 = (x^+2x+1/x^-6x+9) + (x+1/x-3) + 1 = (x^+2x+1+x^-2x-3+x-3)/x^-6x+9 = 2x^+x-5/x^-6x+9
b. fog (x) = f(g(x)) = f(x^+x+1) = x^+x+1+1/x^+x+1-3 = x^+x+2/x^+x-2
maaf kalo salah :) -
2. Jawaban Anugrahh
(2x*4x) + (2x*[-5]) + (y*4x) - (y*-5)