HP 39g+ - Page 248

16-38 Programming
R1...R9, R0
Polar
Can contain any expression. Independent variable is θ.
Example
'2*SIN(2*θ)'
X R1(θ)
U1...U9, U0
Sequence
Can contain any expression. Independent variable is N.
Example
RECURSE (U,U(N-1)*N,1,2)
X U1(N)
E1...E9, E0
Solve
Can contain any equation or expression. Independent
variable is selected by highlighting it in Numeric View.
Example
'X+Y*X-2=Y'
X E1
S1fit...S5fit
Statistics
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
X S2fit
or
6
X S2fit