- #1

Tangent100

- 24

- 0

I know that a negative logarithm is undefined.

But I am faced with an equation like this:

-1 x (-2)^(n-1) = -16777216

I divided it by -1 to give (-2)^(n-1) = 16777216

And then took logs to get (n-1) log(-2) = log 16777216

Since I can't work out the log of a negative number, what do I do?

I know that the answer is 25 if i use log (2) but I don't get that :/