Texas Instruments MathPrint TI-30X Pro Manual

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.

ii
Important Information
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limited to any implied warranties of merchantability and fitness for a particular
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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.
Copyright © 2018 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

iv
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
q
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 # # <
<
r
Answer Toggle
r
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<
r

Note: ris also available to toggle number formats for values in cells in the Function
Table and in the Data Editor. Editors such as in matrix, vector and system solver will
display toggled cell values.
Last Answer
% i
The last entry performed on the home screen is stored to the variable ans. This
variable is retained in memory, even after the calculator is turned off. To recall the
value of ans:
• Press % i (ans displays on the screen), or
• Press any operations key (T,U, and so forth) in most edit lines as the first part of
an entry. ans and the operator are both displayed.
Examples
ans 3V3<
V3<
3% c % i
<
Note: The variable ans is stored and pastes in full precision which is 13 digits.
Order of Operations
The TI-30X Pro MathPrint™ calculator uses Equation Operating System (EOS™) to
evaluate expressions. Within a priority level, EOS™ evaluates functions from left to
right and in the following order.
1st Expressions inside brackets.
2nd Functions that need a )and precede the argument,
such as sin,log, and all R³´Pmenu items.
3rd Functions that are entered after the argument,
such as x2and angle unit modifiers.
4th Exponentiation (^) and roots (x‡).
Note: In Classic mode, exponentiation using the
Gkey is evaluated from left to right. The
expression 2^3^2 is evaluated as (2^3)^2, with a
result of 64.
Getting Started 7

8 Getting Started
In MathPrint™ mode, exponentiation using the G
key is evaluated from right to left. The expression
2^3^2 is evaluated as 2^(3^2), with a result of
512.
The calculator evaluates expressions entered with
Fand afrom left to right in both Classic and
MathPrint™ modes. Pressing 3FFis
calculated as (32)2= 81.
5th Negation (M).
6th Fractions.
7th Permutations (nPr) and combinations (nCr).
8th Multiplication, implied multiplication, division, and
angle indicator ±.
9th Addition and subtraction.
10th Logic operators and,nand.
11th Logic operators or,xor,xnor.
12th Conversions such as 4n/d³´Un/d,F³´D,4DMS.
13th L
14th <evaluates the input expression.
Note: End of expression operators and Base n conversions such as 4Bin, angle
conversion 4DMS,4Pfactor, and complex number conversions 4Polar and 4Rectangle, are
only valid in the Home Screen. They are ignored in wizards, function table display and
data editor features where the expression result, if valid, will display without a
conversion. Editors such as in matrix, vector and system solver will also ignore these
end of expression operators in the edit line.
Note: Use brackets to clearly indicate the operation order you expect for your
expression entry. If necessary, the brackets can be used to override the order of
operations followed by the algorithms in the calculator. If the result is not as expected,
check how the expression was entered and add brackets as needed.
Examples
+Q P M 60 T5V M 12 <

(M)1T M 8T12 <
‡and + % b 9T16 <
( ) 4V ( 2T3) <
( ) and + 4(2T3) <
^ and ‡% b 3G2" T 4
G2<
( ) and M( M 3) F <
M3F <
Clearing and Correcting
% s Returns the cursor to the home screen.
Quickly dismisses these applications: Expression
Evaluation, Set Operation, Function Table, Data
Editor, Statistics, Distributions, Vector, Matrix,
Numeric Solver, Polynomial Solver, and System
Solver.
-Clears an error message.
Clears characters on entry line.
JDeletes the character at the cursor.
When the cursor is at the end of an expression, it
will backspace and delete.
% f Inserts a character at the cursor.
% { 1Clears variables x,y,z,t,a,b,c, and dto their
default value of 0.
Any computed Stat Vars will no longer be available
in the Stat Vars menu. Recompute statistic
features as needed.
%  2Resets the calculator.
Getting Started 9

10 Getting Started
Returns the calculator to default settings; clears
memory variables, pending operations, all entries
in history and statistical data; clears any stored
operation and ans.
Memory and Stored Variables
z L % h % {
The TI-30X Pro MathPrint™ calculator has 8 memory variables—x,y,z,t,a,b,c, and d.
You can store the following to a memory variable:
• real or complex numbers
• expression results
• calculations from various applications such as Distributions
• data editor cell values (stored from the edit line)
Features of the calculator that use variables will use the values that you store.
Llets you store values to variables. Press Lto store a variable, and press z
to select the variable to store. Press <to store the value in the selected variable. If
this variable already has a value, that value is replaced by the new one.
zis a multi-tap key that cycles through the variable names x,y,z,t,a,b,c, and d.
You can also use zto recall the stored values for these variables. The name of the
variable is entered in the current entry, but the value assigned to the variable is used to
evaluate the expression. To enter two or more variables in succession, press "after
each.
% h recalls the values of variables. Press % h to display a menu of
variables and their stored values. Select the variable you want to recall and press <.
The value assigned to the variable is inserted into the current entry and used to
evaluate the expression.
% { clears variable values. Press % { and select 1:Yes to clear all
variable values. Any computed Stat Vars will no longer be available in the Stat Vars
menu. Recompute statistic features as needed.
Examples
Start with
clear
screen
% s -
Clear Var % {
1(Selects Yes)

Store 15 L z
<
Recall % h
< F <
L z z
<
z z
< W 4<
³Problem
In a gravel quarry, two new excavations have been opened. The first one measures 350
metres by 560 metres, the second one measures 340 metres by 610 metres. What
volume of gravel does the company need to extract from each excavation to reach a
depth of 150 metres? To reach 210 metres? Display the results in engineering
notation.
q $ " " < -
350 V560 L z <
Getting Started 11

12 Getting Started
340 V610 L z z <
-
150 V % h
< <
-
210 V % h < <
For the first excavation, the company needs to extract 29.4 million cubic metres to
reach a depth of 150 metres, and extract 41.16 million cubic metres to reach a depth
of 210 metres.
-
150 V z z <
210 V z z <
For the second excavation, the company needs to extract 31.11 million cubic metres to
reach a depth of 150 metres, and extract 43.554 million cubic metres to reach a depth
of 210 metres.

Math Functions
This section contains information about using the calculator maths functions such as
trigonometry, statistics and probability.
Fractions
P % @ d 1%j
Fractions with Pcan include real and complex numbers, operation keys (T,V, etc.),
and most function keys (F,% _, etc.).
In Classic mode or classic entries in MathPrint™ mode, the fraction bar Pdisplays in-
line as a thick bar, for example . Use brackets to clearly indicate the arithmetic you
expect. While the Order of Operations rules will apply, you are in control of the way an
expression evaluates by placing the correct brackets in your inputs.
Fraction Results
• Fraction results are automatically simplified and output is in improper fraction
format.
• When mixed number output is desired, use the 4n/d³´Un/d mixed number
conversion at the end of the input expression. This feature is located in d1:
4n/d³´Un/d.
• Fraction results are obtained when the calculated value can display within the
limits of the fraction format supported by the calculator and no decimal value was
entered in the input expression.
• If decimal numbers are used or calculated in a fraction numerator or denominator,
the result will display as a decimal. Entering a decimal forces the result to display
in decimal format.
• Use %j(above r) on results to attempt fraction to decimal conversions
within the fraction display limits offered by this numeric calculator.
Mixed Numbers and Conversions
•% @ enters a mixed number. Press the arrow keys to cycle through the unit,
numerator, and denominator.
•d1converts between simple fractions and mixed-number form (4n/d³´Un/d).
•%jconverts results between fractions and decimals.
MathPrint™ Entry
• To enter numbers or expressions in the numerator and denominator in MathPrint™
mode, press P.
• Press $or #to move the cursor between the numerator and denominator.
• Pressing Pbefore or after numbers or functions may pre-populate the numerator
with parts of your expression. Watch the screen as you press keys to ensure you
enter the expression exactly as needed.
Math Functions 13

14 Math Functions
On the Home Screen
• To paste a previous entry from history in the numerator or mixed number unit,
place the cursor in the numerator or unit, press #to scroll to the desired entry,
and then press <to paste the entry to the numerator or unit.
• To paste a previous entry from history in the denominator, place the cursor in the
denominator, press % # to jump into history. Press #to scroll to the desired
entry, and then press <to paste the entry to the denominator.
Evaluation of Your Expression
• When <is pressed to evaluate your input expression, brackets may be displayed
to clearly indicate how it was interpreted and calculated by the calculator. If it is
not what you expected, copy the input expression and edit as needed.
Classic Mode or Classic Entry
• If the cursor is in a classic entry location, enter the numerator expression enclosed
by brackets, then press Pto display the thick fraction bar, and then enter the
denominator expression also enclosed with brackets for the result to be calculated
as you expect for your problem.
Examples in MathPrint™ Mode
n/d, Un/d P3$4" T 1%
@7$12 <
Note: Brackets are added
automatically.
4n/d³´Un/d 9P2" d 1<
f³´d4% @ 1$2" %
j<
Example P1.2 T1.3 $4<
Note: Result is decimal
since decimal numbers
were used in the
fraction.
Example P M 5T % b 5
F U 4(1)(6)
$2(1) <

Examples in Classic Mode
n/d, Un/d 3P4T1% @ 7P
12 <
4n/d³´Un/d 9P2d1<
f³´d4% @ 1P2%
j<
Brackets (2F U 1)P(2
F T 1) <
Percentages
% _
To perform a calculation involving a percentage, press % _ after entering the value
of the percentage.
Example
2% _ V 150 <
³Problem
A mining company extracts 5000 tonnes of ore with a concentration of metal of 3%
and 7300 tonnes with a concentration of 2.3%. On the basis of these two extraction
figures, what is the total quantity of metal obtained?
If one tonne of metal is worth 280 units of currency, what is the total value of the
metal extracted?
3% _ V 5000 <
T2.3 % _ V 7300 <
Math Functions 15

16 Math Functions
V280 <
The two extractions represent a total of 317.9 tonnes of metal for a total value of
89012 units of currency.
Scientific Notation [EE]
E
Eis a shortcut key to enter a number in scientific notation format. A number such as
(1.2 x 10-4) is entered in the calculator as the number 1.2E-4.
Example
2E5<
Note: Enters (2 x 105) using the
calculator Enotation.
q $ " <
Note: The SCI mode setting displays
results in scientific notation.
- <
-
4E2V6E M 1<
P5E3$2E4<
%i%j
Example
Textbook Problem
-
(5V10 G3" ) W ( 2V10 G
4" ) <
Using E
-
5E3W2E4<