New Appendix A: TI-Nspire CAS CX with OS4 - Weeblyfurthermathscsc.weebly.com/uploads/1/2/2/4/12246400/... · 2018. 11. 13. · Appendix A Appendix A: TI-Nspire CAS CX with OS4.0 791

Appendix A: TI-NspireCAS CX with OS4.0

Keystroke actions and short cuts for theTI-Nspire CAS CX

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Mode Settings

How to set in Degree mode

For Further Mathematics it is necessary to set the calculator to Degree mode right from the

start. This is very important for the Trigonometry topic. The calculator will remain in this

mode unless you change the setting again or update the operating system.

Cambridge Senior Maths AC/VCE Further Mathematics 3&4

ISBN 978-1-316-61622-2 © Jones et al. 2016 Photocopying is restricted under law and this material must not be transferred to another party.

Cambridge University Press Updated November 2017

790 Appendix A � Appendix A: TI-Nspire CAS CX with OS4.0

Press c and move to Settings>Document Settings, arrow down to the

Note that there is a separate settings menu for the Graphs Geometry pages. These settings

are accessed from the relevant pages. For Mathematics it is not necessary for you to change

these settings.

Note: When you start your new document you will see DEG in the top status line.

How to set in Approximate (Decimal) mode

For Further Mathematics it is useful to set the calculator to Approximate (Decimal) mode

right from the start. The calculator will remain in this mode unless you change the setting

again or update the operating system.

Press c and move to Settings>Document Settings, arrow down to the CalculationMode field, press and select Approximate from the list, and then arrow down to the

Make Default tab. Select OK to accept the change.

Note that you can make both the Degree and Approximate Mode selections at the same

time if desired.

press and select Degree from the list, and then arrow down to the Make Default tab.Select OK to accept the change.

Angle field,




Appendix A � Appendix A: TI-Nspire CAS CX with OS4.0 791

The home screen is divided into two main areas: Scratchpad and Documents.

All instructions given in the text, and in Appendix A, are based on the Documents platform.

Documents

Documents can be used to access all the functionality required for Further Mathematics

including all calculations, graphing, statistics and geometry.

Starting a new document1 To start a new document, press c and select New

Document.2 If prompted to save an existing document move the

cursor to No and press ·.

Note: Pressing /+N will also start a new document.

A: Calculator page – this is a fully functional CAS

calculation platform that can be used for calculations

such as arithmetic, algebra, finance, trigonometry and

matrices. When you open a new document select AddCalculator from the list.

1 You can enter fractions using the fraction template if

you prefer. Press /p to paste the fraction template

and enter the values. Use the e key or arrows

to move between boxes. Press · to display the

answer. Note that all answers will be either whole

numbers or decimals because the mode was set to

approximate (decimal).

2 For problems that involve angles (e.g. evaluate sin(26◦)) it is good practice to include the

degree symbol even if the mode is set to degree (DEG) as recommended.

Note: If the calculator is accidentally left in radian (RAD) mode the degree symbol will override this and

compute using degree values.

The degree symbol can be accessed using º. Alternatively select from the Symbolspalette /.To enter trigonometry functions such as sin, cos, etc., press theμkey or just

type them in with an opening parenthesis.





Solving equationsUsing the Solve command, solve 2y + 3 = 7 for y.

In a Calculator page press b>Algebra>Solve and

complete the Solve command as shown opposite. You

must include the variable you are making the subject at

the end of the command line.

Hint: You can also type in solve( directly from the keypad but

make sure you include the opening bracket.

Literal equations such as ax − by = c can be solved in a

similar way.

Note that you must use a multiplication sign between

two letters.

Clearing the history areaOnce you have pressed · the computation becomes

part of the History area. To clear a line from the

history area, press repeatedly until the expression

is highlighted and press ·. To completely clear the

History Area, press b>Actions>Clear History and

press · again.

Alternatively press /+b to access the contextual

menu.

It is also useful occasionally to clear any previously

stored values. Clearing History does not clear stored

variables.

Pressing b>Actions>Clear a-z. . . will clear any

stored values for single letter variables that have been

used.

Use b>Actions>Delete Variable if the variable

name is more than one letter. For example, to delete the

variable perimeter, then use DelVar perimeter.

Note: When you start a new document any previously stored

variables are deleted.




Appendix A � Appendix A: TI-Nspire CAS CX with OS4.0 793

How to construct parallel box plots from two data lists

Construct parallel box plots to display the pulse rates of 23 adult females and 23 adult males.

Pulse rate (beats per minute)

Females Males

65 73 74 81 59 64 76 83 95 70 73 79 64 80 73 73 78 75 65 69 70 70 78 58 77 64

77 80 82 77 87 66 89 68 78 74 76 67 69 72 71 68 72 67 77 73

Steps

1 Start a new document: /+N

2 Select Add Lists & Spreadsheet. Enter the data

into lists called females and males as shown.

3 Statistical graphing is done through the Data &Statistics application.

Press /+I and select Add Data & Statistics.

(or press c and arrow to and press ·).

Note: A random display of dots will appear – this

indicates list data are available for plotting. It is not a

statistical plot.

a Press e, or navigate and click on the ‘Click

to add variable’ box to show the list of

variables. Select the variable, females. Press

· or a to paste the variable to the x-axis.

A dot plot is displayed by default as shown.

b To add another variable to the x-axis press

b>Plot Properties>Add X Variable, then

·. Select the variable males. Parallel dot

plots are displayed by default.

c To change the plots to box plots press b>PlotType>Box Plot, and then press ·. Your

screen should now look like that shown

opposite.





4 Data analysis

Use b>Analyze>Graph Trace and

use the cursor arrows to navigate through

the key points. Alternatively just move the

cursor over the key points. Starting at the

far left of the plots, we see that, for

females, the:

� minimum value is 59: MinX = 59� first quartile is 68: Q1= 68� median is 76: Median = 76� third quartile is 81: Q3 = 81� maximum value is 95: MaxX = 95and for males, the:

� minimum value is 58: MinX = 58� first quartile is 68: Q1 = 68� median is 72: Median = 72� third quartile is 76: Q3 = 76� maximum value is 80: MaxX = 80

Use to trace the other plot.

Press d to exit the Graph Trace tool.


