(Undefined); (Infinity); Σ (Summation); Σ+ (Sigma Plus) - HP 48gII Advanced User's Reference Manual

Input/Output:
See also: TAYLR, ,
?

(Undefined)

CAS: The "undefined" symbol for numeric results that are not defined by the rules of arithmetic.
∞

(Infinity)

CAS: Symbol signifies infinite numeric result, such as division of a non-zero number by zero.
Σ (Summation)
Type: Function
Description: Summation Function: Calculates the value of a finite series.
The summand argument smnd can be a real number, a complex number, a unit object, a local or global
name, or an algebraic object. The algebraic syntax for
syntax is: ' (index=initial,final,summand)'
...½
Access:
Flags: Symbolic Constants (-2), Numerical Results (-3)
Input/Output:
TAYLR, ∫,
See also:
Σ+ (Sigma Plus)
Type: Command
Description: Sigma Plus Command: Adds one or more data points to the current statistics matrix (reserved
variable DAT).
For a statistics matrix with m columns, arguments for + can be entered several ways:
• To enter one data point with a single coordinate value, the argument for + must be a real
number.
• To enter one data point with multiple coordinate values, the argument for + must be a
vector with m real coordinate values.
• To enter several data points, the argument for + must be a matrix of n rows of m real
coordinate values.
In each case, the coordinate values of the data point(s) are added as new rows to the current
statistics matrix (reserved variable DAT). If DAT does not exist, + creates an n x m matrix
and stores the matrix in DAT. If DAT does exist, an error occurs if it does not contain a real
matrix, or if the number of coordinate values in each data point entered with + does not match
the number of columns in the current statistics matrix.
Once DAT exists, individual data points of m coordinates can be entered as m separate real
numbers or an m-element vector. LASTARG returns the m-element vector in either case.
...µ +
Access:
3-212 Full Command and Function Reference
L4/A1 L3/A2
lower limit upper limit
L = Level; A = Argument; I = Item
L4/A1 L3/A2
'indx' x
init
'indx' 'init'
'indx' x
init
'indx' 'init'
L = Level; A = Argument; I = Item
L2/A3
integrand 'name'
differs from the stack syntax. The algebraic
(½ is the right-shift of the Skey).
L2/A3 L1/A4
x smnd
final
x smnd
final
'final' smnd
'final' smnd
L1/A4
'symb
L1/I1
x
sum
' (indx = init, x
' (indx = x , final, smnd)'
init
' (indx = init, final, smnd)'
L1/I1
'
integral
, smnd)'
final