Question

Y=X+2 sobre x-2
Função inversa
F-1 algum bagulho assim

Answer 1

$y= \dfrac{x+2}{x-2}\\\\ inverte~y~por~x..\\\\ x= \dfrac{y+2}{y-2}\\\\ y+2=x(y-2)\\ y+2=xy-2x\\ y-xy=-2x-2\\ y(1-x)=-2x-2\\\\ y= \dfrac{-2x-2}{1-x}\\\\ \Large\boxed{f^{-1}= \dfrac{-2x-2}{1-x}}$