# Σ - (sigma Minus); (derivative) - HP 48gII Advanced User's Reference Manual

Graphing calculator.

Input/Output:
CL , RCL , STO , –
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 + into the current
statistics matrix (reserved variable DAT).
The last row of the statistics matrix is deleted.
The vector returned by – can be edited or replaced, then restored to the statistics matrix by +.
...µ –
Access:
Input/Output:
CL , RCL , STO , +
(Pi)
Type:
Function
Description: Function: Returns the symbolic constant ' ' or its numerical representation, 3.14159265359.
The number returned for is the closest approximation of the constant to 12-digit accuracy.
In Radians mode with flag –2 and –3 clear (to return symbolic results), trigonometric functions
of and /2 are automatically simplified. For example, evaluating ' SIN( ) ' returns zero.
However, if flag –2 or flag –3 is set (to return numerical results), then evaluating ' SIN( ) ' returns
the numerical approximation –2.06761537357E–13.
Access:
Flags:
Symbolic Constants (-2), Numerical Results (-3)
Input/Output:
e, i, MAXR, MINR,

### (Derivative)

Type:
Function
Description: Derivative Function: Takes the derivative of an expression, number, or unit object with respect
to a specified variable of differentiation.
L
/A
... L
/A
m
1
2
m–1
x
... x
1
m–1
L = Level; A = Argument; I = Item
Level 1/Argument 1
Level 1/Argument 1
Q
L
/A
1
m
x
[ x
, x
, ..., x
]
1
2
m
[[ x
, ..., x
] [ x
, ... ,x
1 1
1 m
n 1
n m
x
m
( ìis the left-shift of the #key).
Full Command and Function Reference 3-213
L
/I
1
]]
Level 1/Item 1
x
[ x
x
... x
]
1
2
m
Level 1/Item 1
' '
3.14159265359...
1