Question 451605
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi,
*[tex \LARGE \ \ \ \ \  \ \ \ b^y = x \ \ \ \ \ \Rightarrow\ \ \ \ \ \ \ y = \log_b(x) ]
 
*[tex \LARGE \ \ \ \ \  \ \ \ 3^4 = 81 \ \ \ \ \ \Rightarrow\ \ \ \ \ \ \ 4 = \log_3(81) ]