Re: 33s  programming question Message #3 Posted by Stefan Vorkoetter on 15 May 2008, 4:52 p.m., in response to message #1 by Frank Rottgardt
Like virtually all calculators, the HP 33s doesn't actually store the entered data anywhere. All it does is accumulate the various sums in the statistics registers.
Writing your own input routine, something like this, is probably the best way to go:
LBL S
ENTER
3
y^x
STO +K
RDN
Sigma+
RTN
This is similar to what I do in my curve fitting program for the HP 35s, where I need to accumulate not only the normal six statistics values, but also:
Sigma ln(x)
Sigma ln(y)
Sigma x ln(y)
Sigma y ln(x)
Sigma ln(x)^2
Sigma ln(y)^2
Sigma ln(x) ln(y)
Stefan
