"erik" wrote:
What is the function (and where can I find it) opposite of LOG

No function needed. The inverse log is simply the base raised
to the power of the logarithm. In the case of LOG(), the base
is 10. So 10^LOG(x) = x.

Likewise, e^LN(X) = X. But "e" is not a reserved symbol in
Excel. Hence the need for EXP().