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4x - 1
= 1 + 7(4x-1)
4x - 1 4x - 1
= 1 + 28x - 7
4x - 1
= 28x - 6
4x - 1
(gof) = 28x - 6
4x - 1
y = 28x - 6
4x - 1
y(4x - 1) = 28x - 6
4xy - y = 28x - 6
4xy - 28x = y - 6
x(4y - 28) = y - 6
x = y - 6
4y - 28
-1
(gof) = x - 6
4x - 28
-1
(gof) (-3) = -3 - 6
4(-3) - 28
= -9
-40
= 9
40
f(x)=
g(x)=x+1
g(f(-1)) = g 1/(4(-1))-1
= g (1/-4-1)
= (1/-5)+1
= 1-5/-5
= 4/5
g(f(-3)) = g (1/(4(-3))-1)
= g (1/-12-1)
= g (1/-13)
= 1/-13+1
= 1-13/-13
= 12/13
maaf kalo jawabannya salah ya, cuma nyoba buat bantu doang:)