HP Prime Graphing Calculator - Manual (Page 571)

Programming in HP PPL 565
Type
Inference
Determines the type of hypothesis test or confidence
interval. Depends upon the value of the variable Method.
From Symbolic View, make a selection for Type.
Or, in a program, store the constant number from the list
below into the variable Type. With Method=0, the
constant values and their meanings are as follows:
0 Z-Test:1
1 Z-Test:
2 Z-Test:1
3 Z-Test:
4 T-Test:1
5 T-Test:
With Method=1, the constants and their meanings are:
0 Z-Int:1
1 Z-Int:
2 Z-Int:1
3 Z-Int:
4 T-Int:1
5 T-Int:
X0, Y0...X9,Y9
Parametric
Contains two expressions in T: X(T) and Y(T). In
Symbolic view, select any of X0–Y0 through X9–Y9 and
enter expressions in T.
In a program, store expressions in T in Xn and Yn, where
n is an integer from 0 to 9.
Example:
SIN(4*T) 
Y1;2*SIN(6*T)

X1
U0...U9
Sequence
Contains an expression in N. In Symbolic view, select any
of U0 through U9 and enter an expression in N, Un(N-1),
or Un(N-2).
In a program, use the RECURSE command to store the
expression in Un, where n is an integer from 0 to 9.
Example:
RECURSE (U,U(N-1)*N,1,2)  U1
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