Question

ecuatia in R :
$2^{x-1} = \frac{1}{2}$

Answer 1

[tex]\displaystyle 2^{x-1}=\frac 12\Leftrightarrow 2^{x-1}=2^{-1}\Leftrightarrow x-1=-1\Leftrightarrow x=0\\ \\ S=\{0\}.[/tex]

Answer 2

2^(x-1)=1/2
2^(x-1)=2^(-1)
=> x-1= -1
x=1-1
x=0