Texas Instruments TI-Nspire CAS User Manual

220 Symbols
Π() (prodSeq)
Catalog >
Π(Expr1, Var, Low, Low−1) ⇒ 1
Π(Expr1, Var, Low, High) ⇒ 1/Π(Expr1,
Var, High+1, Low−1) if High < Low−1
The product formulas used are derived from
the following reference:
Ronald L. Graham, Donald E. Knuth, and
Oren Patashnik. Concrete Mathematics: A
Foundation for Computer Science.
Reading, Massachusetts: Addison-Wesley,
1994.
Σ() (sumSeq)
Catalog >
Σ(Expr1, Var, Low, High) ⇒ expression
Note: You can insert this function from the
keyboard by typing sumSeq(...).
Evaluates Expr1 for each value of Var from
Low to High, and returns the sum of the
results.
Note: See also Sum template, page 9.
Σ(Expr1, Var, Low, Low−1) ⇒ 0
Σ(Expr1, Var, Low, High) ⇒ μ
Σ(Expr1, Var, High+1, Low−1) if High <
Low−1
The summation formulas used are derived
from the following reference:
Ronald L. Graham, Donald E. Knuth, and
Oren Patashnik. Concrete Mathematics: A
Foundation for Computer Science.
Reading, Massachusetts: Addison-Wesley,
1994.

Texas Instruments TI-Nspire CAS Specifications

General

Type	Graphing
Cover	-
Form factor	Pocket
Control type	Buttons, Touch
Product color	Grey, Silver
Digits	- digits
Display tilting	No
Display resolution	320 x 240 pixels
Display number of lines	- lines
Compatible operating systems	Windows XP/2000\\r Mac OS X 10.4/10.5
Battery type	AAA
Power source	Battery
Number of batteries supported	4
USB port	Yes
USB 2.0 ports quantity	1
RAM capacity	16 MB
ROM capacity	20 MB

Weight and Dimensions

Depth	198.3 mm
Width	100 mm
Height	28.7 mm