On Sun, Aug 23, 2009 at 2:18 PM, Tim Lahey<tim.la...@gmail.com> wrote:
>
> On Aug 23, 2009, at 5:14 PM, Harald Schilly wrote:
>
>> I think that's maybe a reminiscence from the age of pocket calculators
>> or even slide rules.
>>
>
> ln(x) is what's used in engineering. I dislike the use of log(x) for
> ln(x)
> but I'm guessing I don't have much of a choice. All use of log I learned
> had a subscript to indicate the base.
At least we do have ln = log somewhere, so you can always type "ln".
For the record, the engineering-oriented MATLAB does not have ln in any way:
>> ln(5)
??? Undefined command/function 'ln'.
>> log(5)
ans =
1.6094
Mathematica does not have Ln in any way:
In[2]:= N[Ln[2]]
Out[2]= Ln[2.]
In[3]:= N[Log[2]]
Out[3]= 0.693147
Maple *does* have ln and even turns "log(x)" into "ln(x)".
> evalf(log(2));
0.6931471806
> evalf(ln(2));
0.6931471806
> log(x);
ln(x)
> ln(x);
ln(x)
So since Tim's from Waterloo that might explain his preference for ln.
> Cheers,
>
> Tim.
> ---
> Tim Lahey
> PhD Candidate, Systems Design Engineering
> University of Waterloo
> http://www.linkedin.com/in/timlahey
>
>
> >
>
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
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