Diketahui f(x)=2x+5 g(x)=X-2 Tentukan a.f~1 dan g~1 b.(Fog)~1

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f(x) = 2x + 5
x = (f(x) - 5)/2

f^-1 (x) = (x - 5)/2 ✔

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g(x) = x - 2
x = g(x) + 2

g^-1 (x) = x + 2 ✔

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(fog^-1 (x)
= g^1 o f^-1
= (x - 5)/2 + 2
= (x - 5 + 4)/2
= (x - 1)/2 ✔