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valentinak56 [21]
3 years ago
10

Inverse fraction of f(x)=2x+1

Mathematics
1 answer:
Akimi4 [234]3 years ago
6 0

Answer:

f^{-1}(x) = \frac{x-1}{2}

Step-by-step explanation:

let f(x) = y, then y = 2x + 1

rearrange, making x the subject

subtract 1 from both sides

y - 1 = 2x ( divide both sides by 2 )

x = \frac{y-1}{2}

change y back into terms of x

f^{-1}(x) = \frac{x-1}{2}


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