error using log too many input arguments

I'm having a small issue using log. I want to change the base of the log using the log(b, x) format but It shows the error to many input arguments here is my code: Xans1 = log(3, sol) -4;

Answer 1

[Walter Roberson]

You are looking at the documentation for the symbolic log(). The numeric log() does not accept two parameters.

Answer 2

[David Goodmanson]

Hi Janrex,

Since

log_base_b(x) = log(x)/log(b)

you could write your own function for that, just don't call it 'log'.