E
erik
What is the function (and where can I find it) opposite of LOG, e.g.
Inverse Log(Log10) = 10)?
-Erik
[email protected]
Inverse Log(Log10) = 10)?
-Erik
[email protected]
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J
joeu2004
erik said: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().
R
R..VENKATARAMAN
depends upton
log(10,10) is 1
reverse is power functin
10 to the power 1(a0^1) is10
simialrly log(10,2) is 3.321928
so 2^3.321928 is 10
LN is the log to the base e(exponetial)
LN(86) is 4.454347
exp is the worksheet function for exponential
exp(4.454347) is 86
see excel help for these functions
log(10,10) is 1
reverse is power functin
10 to the power 1(a0^1) is10
simialrly log(10,2) is 3.321928
so 2^3.321928 is 10
LN is the log to the base e(exponetial)
LN(86) is 4.454347
exp is the worksheet function for exponential
exp(4.454347) is 86
see excel help for these functions
J
joeu2004
R..VENKATARAMAN said:[email protected] said:In the case of LOG(), the base is 10. So 10^LOG(x) = x.
depends upton
log(10,10) is 1
reverse is power functin 10 to the power 1(a0^1) is10
simialrly log(10,2) is 3.321928
so 2^3.321928 is 10
[....]
see excel help for these functions
Yes, __do__ read the Help text. I wrote "LOG(x)" with no
"base" parameter. The default base is 10. So while it is
true that you may specify other bases, what I wrote was
not incorrect for base 10.
I interpreted the OP's question to be about log to base 10. I
mentioned LN() only to explain why the OP might have found
EXP(), which I thought might have set his expectation for
something comparable for LOG().