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Verified answer
F(2x+1) = 6x+2 ---> y = 2x+12x = y-1
x = y-1 / 2
x⁻ = x-1 /2
f(x) = 6 (x-1 /2) + 2
= 3 (x-1) + 2
= 3x-1
g (x/2) = -x+5 ---> y = x/2
x = 2y
x⁻ = 2x
g(x) = - (2x)+5
= -2x+5
(f-g)(x) = f(x)-g(x)
= 3x-1 - (-2x+5)
= 3x-1+2x-5
= 5x-6
Verified answer
Bab Fungsi KomposisiMatematika SMA Kelas X
f(2x + 1) = 6x + 2
f(2 . x/2 + 1) = 6 . x/2 + 2
f(x + 1) = 3x + 2
f(x - 1 + 1) = 3(x - 1) + 2
f(x) = 3x - 1
g(x/2) = -x + 5
g(2x/2) = -2x +5
g(x) = -2x + 5
(f - g) (x) = 3x - 1 - (-2x + 5)
(f - g) (x) = 5x - 6