HP 48GII

Full Command and Function Reference 3-213
Input/Output:
L
m
/A
1
… L
2
/A
m–1
L
1
/A
m
L
1
/I
1
x
→
[ x
1
, x
2
, …, x
m
]
→
[[ x
1 1
, …, x
1 m
] [ x
n 1
, … ,x
n m
]]
→
x
1
… x
m–1
x
m
→
L = Level; A = Argument; I = Item
See also: CLΣ, RCLΣ, STOΣ, Σ–
Σ – (Sigma Minus)
Type: Command
Description: Sigma Minus Command: Returns a vector of m real numbers (or one number x if m = 1)
corresponding to the coordinate values of the last data point entered by Σ+ into the current
statistics matrix (reserved variable ΣDAT).
The last row of the statistics matrix is deleted.
The vector returned by Σ– can be edited or replaced, then restored to the statistics matrix by Σ+.
Access: …µΣ–
Input/Output:
Level 1/Argument 1 Level 1/Item 1
→
x
→
[ x
1
x
2
… x
m
]
See also: CLΣ, RCLΣ, STOΣ, Σ+
π (Pi)
Type: Function
Description: π Function: Returns the symbolic constant
'π' or its numerical representation, 3.14159265359.
The number returned for π is the closest approximation of the constant π to 12-digit accuracy.
In Radians mode with flag –2 and –3 clear (to return symbolic results), trigonometric functions
of π and π/2 are automatically simplified. For example, evaluating
'SIN(π)' returns zero.
However, if flag –2 or flag –3 is set (to return numerical results), then evaluating
'SIN(π)' returns
the numerical approximation –2.06761537357E–13.
Access: !ì ( ìis the left-shift of the #key).
Flags: Symbolic Constants (-2), Numerical Results (-3)
Input/Output:
Level 1/Argument 1 Level 1/Item 1
→
' π '
→
3.14159265359…
See also: e, i, MAXR, MINR, →Qπ
∂ (Derivative)
Type: Function
Description: Derivative Function: Takes the derivative of an expression, number, or unit object with respect
to a specified variable of differentiation.