Question

Explique também por favor

Answer 1

$y= \frac{2x-3}{x+4}$

isole o x

$y= \frac{2x-3}{x+4} \\\\y*(x+4)=2x-3\\\\yx+4y = 2x-3\\\\4y=2x-3-yx\\\\4y+3=2x-yx\\\\4y+3=x*(2-y)\\\\ \frac{4y+3}{2-y}=x \\\\ \text{entao}\\\\\boxed{\boxed{ \frac{4x+3}{2-x} =f^{-1}(x)}}$