Question 433844
in general if you have a statement: log[b](b^x), where [b] is the base of the log. This statement is equivalent to x*log[b](b), now the second part, log[b](b) is asking b^? = b. obviously ?=1 meaning b^1=b. so the second part simplifies to 1, and so log[b](b^x) = x*log[b](b)  = x*1 = x.

In your particular problem x = -.38 and b = 4