Question

URGENTE!
Determine a função inversa de cada função:

$f(x)= \frac{x + 2}{4}$
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Answer 1

$\large\boxed{\begin{array}{l}\sf f(x)=\dfrac{x+2}{4}\\\sf x+2=4f(x)\\\sf x=4f(x)-2\\\sf f^{-1}(x)=4x-2\end{array}}$

Answer 2

Oie, tudo bom?

$f(x) = \frac{x + 2}{4} \\ \boxed{f(x)⟶y} \\ y = \frac{x + 2}{4} \\ \boxed{x⟷y} \\ x = \frac{y + 2}{4} \\ \frac{y + 2}{4} = x \\ y + 2 = 4x \\ y = 4x - 2 \\ \boxed{y⟶f {}^{ - 1} (x)} \\ \boxed{f {}^{ - 1} (x) = 4x - 2}$

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