Texas Instruments nspire cx, TI-nspire CX CAS User Manual

CAS Calculators

Sean Surratt
TECM 2700
July 3, 2013

Table of Contents 3

Table of Contents

Table of Contents ............................................................................ 3

Introduction .................................................................................... 5

Basics ...............................................................................................7

Exact and Approximate Results .................................................. 9

Trig Functions ............................................................................. 9

Shortcut Keys .............................................................................10

Syntax .........................................................................................10

Understanding Variables ........................................................... 11

Storing Variables .................................................................... 11

Deleting Variables .................................................................. 11

Variable Naming Conventions................................................ 11

Symbolic Math ............................................................................... 13

Symbolic Algebra ....................................................................... 15

Solving Equations ................................................................... 15

Factoring Expressions ............................................................ 15

Understanding Units .................................................................. 16

Unit Conventions .................................................................... 16

Unit Operations ...................................................................... 16

Symbolic Calculus ...................................................................... 17

Matrix/Vector/List ........................................................................ 19

Matrix ......................................................................................... 21

Creating a Matrix .................................................................... 21

Manipulating a Matrix ............................................................ 21

Matrix Operations .................................................................. 21

Vector ........................................................................................ 22

Vector Operations .................................................................. 22

4 CAS Calculators

Lists ........................................................................................... 22

Creating Lists ......................................................................... 22

Manipulating Lists ................................................................. 23

List Operations ...................................................................... 23

Introduction to Programming ...................................................... 25

Programs Make Life Easier ....................................................... 27

Make a Simple Program ............................................................ 27

Index ............................................................................................. 29

Introduction 5

Introduction

This document will focus on the Texas Instruments nspire cx CAS
calculator. The ability to use a Calculator with a Computer Algebra
System is fundamental to be a successful engineering student
today. CAS calculators can solve long equations just by typing
them in and hitting solve. Students unskilled with this tool are at a
significant disadvantage. The best resource to learn about the TI
CAS is the TI nspire guidebook. For some the guidebook has a
steep learning curve. Reading this quick reference manual will
help lower the curve.

To download the guidebook visit the TI website at:
education.ti.com/en/us/guidebook/search/ti-nspire-cas

Basics

TI-nspire CX CAS 1

Basics 9

Exact and Approximate Results

Results that are not whole numbers will automatically be shown in
a fractional or symbolic form. An exact result is a fraction and an
approximate result is a decimal.

Nspire Example I

Trig Functions

Press µ to find all the trig functions.

TI-nspire CX CAS 2