Question

Sa se determine inversa functiei bijective f : (0, +infinit) , f(x) =e^x + 1

Answer 1

Sa notam cu y=e^x+1.atunci x=ln(y-1)

Answer 2

f(x)=y.

$e^{x}=y-1 =\ \textgreater \ ln e^{x} = ln(y-1) =\ \textgreater \ x = ln(y-1).$ . Deoarece lne = 1 !