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monitta
3 years ago
11

If f(x) = 5x - 1, then f^-1(x)=

Mathematics
2 answers:
lesantik [10]3 years ago
7 0
F(-1)=5(-1)-1
-5-1
-6
Your answer is-6
Airida [17]3 years ago
3 0

Answer:

f^{-1}(x) = \frac{x+1}{5}

Step-by-step explanation:

let y = f(x) and rearrange making x the subject , that is

y = 5x - 1 ( add 1 to both sides )

y + 1 = 5x ( divide both sides by 5 )

\frac{y+1}{5} = x

Change y back into terms of x , with x = f^{-1} (x) , then

f^{-1} (x) = \frac{x+1}{5}

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