Texas Instruments TI-Nspire CAS User Manual

If
Catalog >
Block1 and Block2 can be a single
statement.
If BooleanExpr1 Then
Block1
ElseIf BooleanExpr2 Then
Block2
⋮
ElseIf BooleanExprN Then
BlockN
EndIf
Allows for branching. If BooleanExpr1
evaluates to true, executes Block1. If
BooleanExpr1 evaluates to false, evaluates
BooleanExpr2, and so on.
ifFn()
Catalog >
ifFn(BooleanExpr,Value_If_true [,Value_
If_false [,Value_If_unknown]]) ⇒
expression, list, or matrix
Evaluates the boolean expression
BooleanExpr (or each element from
BooleanExpr ) and produces a result based
on the following rules:
• BooleanExpr can test a single value, a
list, or a matrix.
• If an element of BooleanExpr evaluates
to true, returns the corresponding
element from Value_If_true.
• If an element of BooleanExpr evaluates
to false, returns the corresponding
element from Value_If_false. If you
omit Value_If_false, returns undef.
• If an element of BooleanExpr is neither
true nor false, returns the corresponding
element Value_If_unknown. If you omit
Value_If_unknown, returns undef.
• If the second, third, or fourth argument
of the ifFn() function is a single
expression, the Boolean test is applied to
every position in BooleanExpr.
Test value of 1 is less than 2.5, so its
corresponding
Value_If_True element of 5 is copiedto
the result list.
Test value of 2 is less than 2.5, so its
corresponding
Value_If_True element of 6 is copiedto
the result list.
Test value of 3 is not less than 2.5, so its
corresponding Value_If_False elementof
10 is copiedto the result list.
Value_If_true is a single value and
corresponds to any selectedposition.
Alphabetical Listing 87

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

Summary

Important Information

License

Discusses software license terms and conditions.

Expression Templates

Fraction template

Template for entering fractions.

Exponent template

Template for entering exponents.

Matrix template (m x n)

Template for creating mxn matrices.

First derivative template

Template for calculating first derivatives.

Alphabetical Listing

abs()

Returns the absolute value of the argument.

angle()

Returns the angle of an argument as a complex number.

ANOVA

Performs one-way analysis of variance.

approx()

Evaluates arguments to decimal values.

Symbols

+ (add)

Returns the sum of two arguments.

- (subtract)

Returns the difference between two arguments.

* (multiply)

Returns the product of two arguments.

/ (divide)

Returns the quotient of two arguments.

EOS™ (Equation Operating System) Hierarchy

Order of Evaluation

Details the priority levels for operators and functions.

Parentheses, Brackets, and Braces

Explains how grouped expressions are evaluated first.

Error Codes and Messages

Error code

Lists numeric error codes and their descriptions.

Warning Codes and Messages

Lists numeric warning codes and their associated messages.

Shortcuts for Entering Math Expressions

From the Handheld or Computer Keyboard

Lists shortcuts for handheld and computer input.

From the Computer Keyboard

Lists shortcuts specific to computer keyboard input.