HP 39g+ User Manual page 248

R1...R9, R0
Polar
U1...U9, U0
Sequence
E1...E9, E0
Solve
S1fit...S5fit
Statistics
16-38
Can contain any expression. Independent variable is .
Example
'2*SIN(2* )'
Can contain any expression. Independent variable is N.
Example
RECURSE (U,U(N-1)*N,1,2)
Can contain any equation or expression. Independent
variable is selected by highlighting it in Numeric View.
Example
'X+Y*X-2=Y'
Sets the type of fit to be used by the FIT operation in
drawing the regression line.
From Symbolic Setup view, specify the fit in the field for
S1FIT, S2FIT, etc.
or
In a program, store one of the following constant numbers
or names into a variable S1fit, S2fit, etc.
1 Linear
2 LogFit
3 ExpFit
4 Power
5 QuadFit
6 Cubic
7 Logist
8 User defined
Example
Cubic S2fit
or
6 S2fit
R1( )
E1
U1(N)
Programming