request for a new log function expression

[time_master]

This is an expression for curve fitting to characterize the "standard"
ageing function of a crystal resonator.
If possible I would like to request that it be added to the available
standard log function equations

f(t) = A(ln(Bt + 1)) + fo

this is from
MIL-PRF-55310E -
PERFORMANCE SPECIFICATION
OSCILLATOR, CRYSTAL CONTROLLED,
GENERAL SPECIFICATION FOR


After insertion into the oven, the crystal oscillators shall be
stabilized at an aging temperature for 48 hours
prior to beginning the measurement acquisition (unless otherwise
specified). The frequency of each unit
shall be measured immediately after the stabilization period, and then
a minimum of four times per week
at intervals of at least 20 hours. The measurements obtained shall be
fit using the method of least
squares to the function:
f(t) = A(ln(Bt + 1)) + fo
where f(t) is the frequency of the crystal oscillator, t days after
the start of the aging cycle (the time origin
for measurements analysis shall be the beginning of the stabilization
period), and A, B, and fo are
constants to be determined from the least squares fit.

Thanks for your attention.
The site i great!

[zunzun.com]

On Aug 21, 4:01 pm, time_master <kdhart...@gmail.com> wrote:
> If possible I would like to request that it be added to the available
> standard log function equations

Done.

James