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ikadub [295]
3 years ago
5

HELP ME HELP ME HELP ME!!! Given f(x) below, find f^-1(x).

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

f^{-1} (x) = 6 - 4x

Step-by-step explanation:

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

y = - \frac{1}{4} x + \frac{3}{2} ( multiply through by 4 to clear the fractions )

4y = - x + 6 ( subtract 6 from both sides )

4y - 6 = - x ( multiply through by - 1 )

- 4y + 6 = x

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

f^{-1} (x) = 6 - 4x

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