Texas Instruments MathPrint TI-30X Pro Manuale

TI-30X Pro MathPrint™

Scientific Calculator Guidebook

This guidebook applies to software version 1.0. To view the latest version of the

documentation, go to education.ti.com/eguide.

Important Information

Texas Instruments makes no warranty, either express or implied, including but not

limited to any implied warranties of merchantability and fitness for a particular

purpose, regarding any programmes or book materials and makes such materials

available solely on an "as-is" basis. In no event shall Texas Instruments be liable to

anyone for special, collateral, incidental or consequential damages in connection with

or arising from the purchase or use of these materials, and the sole and exclusive

liability of Texas Instruments, regardless of the form of action, shall not exceed the

purchase price of this product. Moreover, Texas Instruments shall not be liable for any

claim of any kind whatsoever against the use of these materials by any other party.

MathPrint, APD, Automatic Power Down, and EOS are trademarks of Texas Instruments

Incorporated.

Contents

Getting Started 1

Switching the Calculator On and Off 1

Display Contrast 1

Home Screen 1

2nd Functions 2

Modes 2

Multi-Tap Keys 4

Menus 5

Examples 5

Scrolling Expressions and History 6

Answer Toggle 6

Last Answer 7

Order of Operations 7

Clearing and Correcting 9

Memory and Stored Variables 10

Math Functions 13

Fractions 13

Percentages 15

Scientific Notation [EE] 16

Powers, Roots and Inverses 17

Pi (symbol Pi) 17

Math 18

Number Functions 19

Angles 21

Rectangular to Polar 23

Trigonometry 24

Hyperbolics 26

Logarithm and Exponential Functions 26

Numerical Derivative 27

Numerical Integral 28

Statistics, Regressions and Distributions 30

Probability 40

Math Tools 43

Stored Operations 43

Data Editor and List Formulas 44

Function Table 48

Matrices 50

Vectors 53

Solvers 55

iii

Number Bases 60

Expression Evaluation 62

Constants 63

Conversions 64

Complex Numbers 67

Reference Information 70

Errors and Messages 70

Battery Information 74

Troubleshooting 75

General Information 76

Online Help 76

Contact TI Support 76

Service and Warranty Information 76

Getting Started

This section contains information about basic calculator functions.

Switching the Calculator On and Off

&turns on the calculator. % ' turns it off. The display is cleared, but the history,

settings, and memory are retained.

The APD™ (Automatic Power Down™) feature turns off the calculator automatically if

no key is pressed for about 3 minutes. Press &after APD™. The display, pending

operations, settings, and memory are retained.

Display Contrast

The brightness and contrast of the display depend on room lighting, battery freshness

and viewing angle.

To adjust the contrast:

1. Press and release the %key.

2. Press ](to darken the screen) or [(to lighten the screen).

Note: This will adjust the contrast one level at a time. Repeat steps 1 and 2 as

needed.

Home Screen

On the Home screen, you can enter mathematical expressions and functions, along

with other instructions. The answers are displayed on the Home screen.

The TI-30X Pro MathPrint™ screen can display a maximum of four lines with a

maximum of 16 characters per line. For entries and expressions longer than the visible

screen area, you can scroll left and right (!and ") to view the entire entry or

expression.

In MathPrint™ mode, you can enter up to four levels of consecutive nested functions

and expressions, which include fractions, square roots, exponents with ^, Ü, ex, and

10x.

When you calculate an entry on the Home screen, depending upon space, the answer is

displayed either directly to the right of the entry or on the right side of the next line.

Special indicators and cursors may be displayed on the screen to provide additional

information concerning functions or results.

Indicator Definition

2ND 2nd function.

FIX Fixed-decimal setting. (See Mode section.)

SCI, ENG Scientific or engineering notation. (See Mode

section.)

Getting Started 1

2 Getting Started

Indicator Definition

DEG, RAD,

GRAD

Angle mode (degrees, radians, or gradians). (See

Mode section.)

L1, L2, L3 Displays above the lists in data editor.

H, B, O Indicates HEX, BIN, or OCT number-base mode. No

indicator displayed for default DEC mode.

The calculator is performing an operation. Use &

to break the calculation.

5 6 An entry is stored in memory before and/or after

the visible screen area. Press #and $to scroll.

´Indicates that the multi-tap key is active.

Normal cursor. Shows where the next item you

type will appear. Replaces any current character.

Entry-limit cursor. No additional characters can be

entered.

Insert cursor. A character is inserted in front of the

cursor location.

Placeholder box for empty MathPrint™ template.

Use the arrow keys to move into the box.

MathPrint™ cursor. Continue entering in the

current MathPrint™ template, or press "to exit

the template.

2nd Functions

Most keys can perform more than one function. The primary function is indicated on

the key and the secondary function is displayed above it. Press %to enable the

secondary function of a given key. Notice that 2ND appears as an indicator on the

screen. To cancel before pressing the next key, press %again. For example, % b

25 <calculates the square root of 25 and returns the result, 5.

Modes

Use qto choose modes. Press $ # ! " to choose a mode, and <to select it.

Press -or % s to return to the Home screen and perform your work using the

chosen mode settings.

Default settings are highlighted in these sample screens.

DEGREE RADIAN GRADIAN - Sets the angle mode to degrees, radians, or gradians.

NORMAL SCI ENG - Sets the numeric notation mode. Numeric notation modes

affect only the display of results, and not the accuracy of the values stored in the unit,

which remain maximal.

NORMAL displays results with digits to the left and right of the decimal, as in

123456.78.

SCI expresses numbers with one digit to the left of the decimal and the appropriate

power of 10, as in 1.2345678E5, which is the same as the value (1.2345678×105)

including the brackets for correct order of operation.

ENG displays results as a number from 1 to 999 times 10 to an integer power. The

integer power is always a multiple of 3.

Note: Eis a shortcut key to enter a number in scientific notation format. The

result displays in the numeric notation format selected in the mode menu.

FLOAT 0123456789- Sets the decimal notation mode.

Float (floating) decimal mode displays up to 10 digits, plus the sign and decimal.

0123456789(fixed decimal point) specifies the number of digits (0 to 9) to

display to the right of the decimal.

REAL a+bi r±q - Sets the format of complex number results.

REAL real results

a+bi rectangular results

r±q polar results

DEC HEX BIN OCT - Sets the number base used for calculations.

DEC decimal

HEX hexadecimal (To enter hex digits A through F, use % §,% ¨, and so on.)

BIN binary

OCT octal

MATHPRINT CLASSIC

MATHPRINT mode displays most inputs and outputs in textbook format.

CLASSIC mode displays inputs and outputs in a single line.

Examples of MathPrint™ and Classic Modes

MathPrint™ Mode Classic Mode

Sci Sci

Getting Started 3

4 Getting Started

MathPrint™ Mode Classic Mode

Float mode and answer toggle

key

Float mode and answer toggle

key.

Fix 2 and answer toggle key Fix 2

Un/d Un/d entry

Exponent example Exponent example

Square root example Square root example

Cube root example Cube root example

Multi-Tap Keys

A multi-tap key is one that cycles through multiple functions when you press it. Press

"to stop multi-tap.

For example, the Xkey contains the trigonometry functions sin and sin/as well as

the hyperbolic functions sinh and sinh/. Press the key repeatedly to display the function

that you want to enter.

Multi-tap keys include z,X,Y,Z,C,D,H, and g. Applicable

sections of this guidebook describe how to use the keys.

Menus

Menus give you access to a large number of calculator functions. Some menu keys,

such as % h, display a single menu. Others, such as d, display multiple

menus.

Press "and $to scroll and select a menu item, or press the corresponding number

next to the item. To return to the previous screen without selecting the item, press

-. To exit a menu and return to the Home screen, press % s.

% h (key with a single menu):

RECALL VAR

1:x = 0

2:y = 0

3:z = 0

4:t = 0

5:a = 0

6:b = 0

7:c = 0

8:d = 0

d(key with multiple menus):

MATHS NUM DMS R³´P

1:4n/d³´Un/d

2:lcm(

3:gcd(

4:4Pfactor

5:sum(

6:prod(

7:nDeriv(

8:fnInt(

1:abs(

2:round(

3:iPart(

4:fPart(

5:int(

6:min(

7:max(

8:mod(

1:¡

2:¢

3:£

4:r

5:g

6:4DMS

1:P 4Rx(

2:P 4Ry(

3:R 4Pr(

4:R 4Pq(

Examples

Some sections are followed by instructions for keystroke examples that demonstrate

the TI-30X Pro MathPrint™ functions.

Notes:

• Examples assume all default settings, as shown in the Modes section unless noted

in the example.

• Use -to clear the home screen as needed.

Getting Started 5

6 Getting Started

• Some screen elements may differ from those shown in this document.

• Since wizards retain their memory, some keystrokes may be different.

Scrolling Expressions and History

! " # $

Press !or "to move the cursor within an expression that you are entering or editing.

Press % ! or % " to move the cursor directly to the beginning or end of the

expression.

From an expression or edit, #moves the cursor to the history. Press <from an

input or output in history to paste that expression back to the cursor position on the

edit line.

Press % # from the denominator of a fraction in the expressions edit to move the

cursor to the history. Press <from an input or output in history to paste that

expression back to the cursor position on the edit line.

Example

7F U 4

(3)(1) <

% b # # <

Answer Toggle

Press the rkey to toggle the display result (when possible) between fraction and

decimal answers, exact square root and decimal, and exact pi and decimal.

Example

Answer

toggle

% b 8<

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