Properties of Logarithms

13. Inverse, Exponential, & Logarithmic Functions / Properties of Logarithms / Problema 1

Problema 1

Which equation correctly expresses the definition of a logarithm $\log_{b} (a) = c$ ?

$b = a^{c}$

$c = b \cdot a$

$a^{b} = c$

$b^{c} = a$

Which equation correctly expresses the definition of a logarithm logb(a)=c\(\log\)_b(a) = c?