[Tutor] math description
Peter Otten
__peter__ at web.de
Thu Sep 6 10:56:15 CEST 2012
damjan kuzmic wrote:
> i would like to know how to write a formula that in excell looks like
> this:
>
> A / EXP(-LN(2) * t)
>>> import math
>>> A = 1.23
>>> t = 4.56
Literally (math.log is the natural logarithm):
>>> A / math.exp(-math.log(2) * t)
29.013618196288864
However,
exp(-x) == 1 / exp(x)
and
exp(ln(a)*x) == a ** x
so you better spell it
>>> A * 2 ** t
29.013618196288864
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