Question

Sendo F (×)=2×-1, calcule o F-1 (3)

Answer 1

Olá.

• $F(x) = 2x - 1$
• $F^{-1}(x) = 2y - 1$

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

$F^{-1}(3):$

$y = \frac{x+1}{2}$
$y = \frac{4}{2}$
$y = 2$

Espero ter ajudado,
Guilherme Poças.

Answer 2

y=2x-1

x=2y-1

-2y=-x-1

2y=x+1
y=x+1/2

f^-1(3)
f^-1(3)= 2.3-1

f^-1(3)=6-1=5