Dik:f (x)=2×-5 g (x)=x-1 2-x Dit: 1. (Fog)(x) 2. (Gof)(x) 3.f-1 (x) 4.g (x) 5. (Fog)-1 (x)
Matematika
anisaramadhany
Pertanyaan
Dik:f (x)=2×-5
g (x)=x-1
2-x
Dit:
1. (Fog)(x)
2. (Gof)(x)
3.f-1 (x)
4.g (x)
5. (Fog)-1 (x)
g (x)=x-1
2-x
Dit:
1. (Fog)(x)
2. (Gof)(x)
3.f-1 (x)
4.g (x)
5. (Fog)-1 (x)
1 Jawaban
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1. Jawaban Sofieeeee
1. f(g(x))
= f(x-1)
=2(x-1)-5
=2x-2-5
=2x-7
2. g(f(x))
= g(2x-5)
=2x-5-1
=2x-6
3. F-1 (x)
2x-5 = y
2x = y+5
x = y+5/2
F-1 (X) = X+5/2