Jika f(x)= 2x-1/akar X-1,hasil F(X-1)

F(x) = (2x – 1)/√(x – 1)
f(x – 1) = (2(x – 1) – 1)/√(x – 1 – 1)
= (2x – 2 – 1)/√(x – 2)
= (2x – 3)/√(x – 2)