Question

Tolong dong yg SMA, ngasal auto laporin

Answer 1

Verified answer

F o f(x) = f(f(x)) = f(x-1)
f o f(x) = (x -1) - 1
f o f(x) = x - 2

Misalkan,
y = x - 2
y + 2 = x

Maka
(f o f) -¹(y) = y + 2

Jadi,
(f o f) -¹(x) = x + 2

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