Answer
fill the blanks with:
$(0,\infty)\qquad ... \qquad (-\infty,\infty).$
Work Step by Step
Book reference:
see Characteristics of Logarithmic Functions, page 460$:$
1. The domain of $f(x)=\log_{b}x$ consists of all positive real numbers: $(0,\infty)$ .
The range of$ f(x)=\log_{b}x $ consists of all real numbers:
$(-\infty,\infty)$ .
