Until; Updir; Utpc; Utpf - HP 48gII Advanced User's Reference Manual

Input/Output:
See also: OVER, PICK, ROLL, ROLLD, SWAP, ROT

UNTIL

Type: Command
Description: UNTIL Command: Starts the test clause in a DO ... UNTIL ... END indefinite loop structure.
See the DO entry for more information.
!°
Access:
Input/Output: None
See also: DO, END

UPDIR

Type: Command
Description: Up Directory Command: Makes the parent of the current directory the new current directory.
UPDIR has no effect if the current directory is HOME.
!§
Access:
Input/Output: None
See also: CRDIR, HOME, PATH, PGDIR

UTPC

Type: Command
Description: Upper Chi-Square Distribution Command: Returns the probability utpc(n, x) that a chi-square
random variable is greater than x, where n is the number of degrees of freedom of the
distribution.
The defining equations are these:
• For x
• For x < 0:
For any value z,
The value n is rounded to the nearest integer and, when rounded, must be positive.
!´ L
Access:
Input/Output:
See also: UTPF, UTPN, UTPT

UTPF

Type: Command
3-192 Full Command and Function Reference
L L
3 2
obj obj
3 2
BRANCH DO UNTIL
0:
utpc n x
utpc n x
z z
⎛ ⎞ ⎛ ⎞ !
-- - ⎝ ⎠ = -- - – 1
⎝ ⎠
2 2
L
PROBABILITY UTPC
Level 2/Argument 1 Level 1/Argument 2
n
L
1
obj
1
( °is the left-shift of the Nkey).
( §is the left-shift of the Jkey).
1
n t
–
--------------- -
-- - 1 – -- -
∫ 2 2
= t e t d
n
-- -
n
2 2
x
-- -
2
= 1
, where ! is the factorial command.
( ´ is the left-shift of the Pkey).
x
L L
3 2
obj obj
1 3
Level 1/Item 1
utpc(n,x)
L
1
obj
2