%i
Last Answer
TI-30X ×B
and
TI-30X ×S
The most recently calculated result is stored to the variable
Ans. Ans is retained in memory, even after the TI-30X Ö is
turned off. To recall the value of Ans:
¦ Press % i (Ans displays on the screen), or
¦ Press any operations key (T, U, F, etc.) as the first
part of an entry. Ans and the operator are both displayed.
Scientific Calculators
Order of Operations
1999 Texas Instruments Incorporated
The TI-30X Ö uses EOSé (Equation Operating System) to
evaluate expressions.
General Information
Examples: See the last page of these instructions for
keystroke examples that demonstrate many of the
TI-30X Ö functions. Examples assume all default settings.
& turns on the TI-30X Ö. % ' turns it off and clears
the display.
APD™ (Automatic Power Down™) turns off the TI-30X Ö
automatically if no key is pressed for about 5 minutes.
Press & after APD. The display, pending operations,
settings, and memory are retained.
2-Line Display: The first line (Entry Line) displays an entry
of up to 88 digits (or 47 digits for Stat or Constant Entry
Line). Entries begin on the left; those with more than 11
digits scroll to the right. Press ! and " to scroll the line.
Press % ! or % " to move the cursor immediately to
the beginning or end of the entry.
The second line (Result Line) displays a result of up to 10
digits, plus a decimal point, a negative sign, a “x10”
indicator, and a 2-digit positive or negative exponent.
Results that exceed the digit limit are displayed in Scientific
Notation.
Indicator
2nd
HYP
FIX
SCI, ENG
STAT
DEG, RAD,
GRAD
K
x10
º »
¹ ¸
Definition
2nd function.
Hyperbolic function.
Fixed-decimal setting.
Scientific or Engineering Notation.
Statistical mode.
Angle mode (degrees, radians, or
gradients).
Constant mode is on.
Precedes the exponent in Scientific or
Engineering Notation.
An entry is stored in memory before and/or
after the active screen. Press # and $ to
scroll.
An entry or menu displays beyond 11 digits.
Press ! or " to scroll.
2nd Functions: % displays the 2nd indicator, and then
selects the 2nd function (printed above keys) of the next
key pressed. For example, % b 25 E <
calculates the square root of 25 and returns the result, 5.
Menus: Certain TI-30X Ö keys display menus: z,
% h, L, % t, u, % w,
H, I, =, % k, % d, % ‚, and
% .
Press ! or " to move the cursor and underline a menu
item. To return to the previous screen without selecting the
item, press -.
To select a menu item:
¦ Press < while the item is underlined, or
¦ For menu items followed by an argument value, enter the
argument value while the item is underlined. The item and
the argument value are displayed on the previous screen.
Previous Entries
# $
After an expression is evaluated, use # and $ to scroll
through previous entries, which are stored in the TI-30X Ö
memory. You cannot retrieve previous entries while in STAT
mode. You can edit a previous entry and press < to
evaluate the new expression.
ENG
30XÖàOMà1L1/A
1st Expressions inside parentheses.
2nd Functions that need a ) and precede the argument,
such as sin, log, and all RÍP menu items.
3rd Fractions.
4th Functions that are entered after the argument, such
as x 2 and angle unit modifiers (Ä Å Æ r g).
5th Exponentiation (^) and roots (x‡).
6th Negation (M).
7th Permutations (nPr) and combinations (nCr).
8th Multiplication, implied multiplication, division.
9th Addition and subtraction.
10th Conversions (A bÌcÍdÌe, FÍD, 4DMS).
11th < completes all operations and closes all open
parentheses.
Clearing and Correcting
¦ Select a unit modifier (Ä Å Æ) for any part of an entry.
Entries with unit modifiers are interpreted accordingly,
overriding the Angle mode.
To convert an entry:
¦ Set the Angle mode to the unit you want to convert to.
Then use a unit modifier to designate the unit to convert
from. (Angles of trigonometric functions convert values
inside parentheses first.), or
¦ Select 4DMS, which converts an entry to DMS (Ä Å Æ)
Notation.
Trigonometry
>?@
%Z[\
Enter trigonometric functions (sin, cos, tan, sin -1, cos-1, tan-1),
just as you would write them. Set the desired Angle mode
before starting trigonometric calculations.
%Y
Hyperbolics
% Y displays the HYP indicator and accesses the
hyperbolic function of the next trigonometry key that you
press. Angle modes do not affect hyperbolic calculations.
A B %]^
Logarithms
A yields the common logarithm of a number.
B yields the logarithm of a number to the base e
(e=2.819291929).
%] raises 10 to the power you specify.
%^ raises e to the power you specify.
-
Clears an error message.
Clears characters on entry line.
Moves the cursor to last entry in history
once display is clear.
Deletes the character at the cursor.
J
Deletes all characters to the right when
you hold down J; then, deletes 1
character to the left of the cursor each
time you press J.
Inserts a character at the cursor.
%f
Clears all memory variables.
%{
Clears all data points without exiting
%t
CLRDATA
STAT mode.
%wY Clears all data points and exits STAT
mode.
Resets the TI-30X Ö. Returns unit to
%Y
or
default settings; clears memory
variables, pending operations, all entries
&&in history, and statistical data; clears
constant mode and Ans.
Fractions
N %j %O
Fractional calculations can display fractional or decimal
results. Results are automatically simplified.
¦ N enters a fraction. Press N between whole number,
numerator, and denominator. The unit, numerator, and
denominator must be positive integers.
¦ % j converts between fractions and decimals.
¦ % O converts between mixed numbers and
simple fractions.
Pi
g
p =3.141592653590 for calculations.
p =3.141592654 for display.
Angle Modes
I =
I displays a menu to specify the Angle mode as
degrees, radians, or gradients.
= displays a menu to specify the Angle unit modifier—
degrees (Ä), radians ( r), gradients (g), or DMS (Ä Å Æ). It
also lets you convert an angle to DMS Notation (4DMS).
To set the Angle mode for any part of an entry:
¦ Select the Angle mode. Entries are interpreted and results
displayed according to the Angle mode, or
RectangularÍPolar
%k
% k displays a menu to convert rectangular
coordinates (x,y) to polar coordinates (r,q) or vice versa.
Set Angle mode, as necessary, before starting calculations.
%l
Constants
% l turns Constant mode on and lets you define a
constant.
To store an operation to K and recall it:
1. Press %l.
2. Enter any combination of numbers, operators, and/or
values, up to 44 characters, beginning with an operator.
3. Press < to save the operation. K displays in the
indicator line.
4. Each subsequent time you press <, the TI-30X Ö
recalls the stored operation and applies it to the last
answer or the current entry.
Press % l again to turn Constant mode off.
Memory
z L %h{
The TI-30X Ö has 5 memory variables—A, B, C, D, and E.
You can store a real number or an expression that results
in a real number to a memory variable.
¦ z accesses the menu of variables.
¦ L lets you store values to variables.
¦ % h recalls the values of variables.
¦ % { clears all variable values.
Notation
%‚ %d %C
% ‚ displays the Decimal Notation mode menu.
These modes affect only the display of results. F (default)
restores standard notation (floating-decimal) format.
0123456789 sets decimal places to n (0–9), retaining
numeric notation mode format.
% d displays the Numeric Notation mode menu.
These modes affect only the display of results.
¦ FLO (default): Floating Notation, with digits to the left and
right of the decimal
¦ SCI: Scientific Notation
¦ ENG: Engineering Notation (exponent is a multiple of 3)
% C enters a value in Scientific Notation, regardless
of the numeric notation mode. Press M before entering a
negative exponent.
Page 1
Statistics %tw v u
Errors
TI Product Service and Warranty Information
1-VAR analyzes statistical data from 1 data set with 1
measured variable, x. 2-VAR stats analyzes paired data
from 2 data sets with 2 measured variables—x, the
independent variable, and y, the dependent variable. You
can enter up to 42 data sets.
To define statistical data points:
1. Press % t. Select 1-VAR or 2-VAR and press
<. The STAT indicator displays.
2. Press v.
3. Enter a value for X 1.
4. Press $.
¦ In 1-VAR stat mode, enter the frequency of occurrence
(FRQ) of the data point. FRQ default=1. If FRQ=0, the
data point is ignored.
¦ In 2-VAR stat mode, enter the value for Y 1 and press
<.
ARGUMENT — A function does not have the correct number
Product Support
5. Repeat steps 3 and 4 until all data points are entered.
You must press < or $ to save the last data point
or FRQ value entered. If you add or delete data points,
the TI-30X Ö automatically reorders the list.
6. When all points and frequencies are entered:
¦ Press u to display the menu of variables (see
table for definitions) and their current values, or
¦ Press v to return to the blank STAT screen. You
can do calculations with data variables (Ï, Ð, etc.).
Select a variable from the u menu and then
press < to evaluate the calculation.
EQUATION LENGTH ERROR — An entry exceeds the digit
7. When finished:
¦ Press % t and select CLRDATA to clear all data
points without exiting STAT mode, or
¦ Press % w < to clear all data points,
variable and FRQ values, and to exit STAT mode (STAT
indicator turns off).
Variables
Definition
n
Ï or Ð
Sx or Sy
Îx or Îy
Òx or Òy
Òx 2 or Òy2
Òxy
a
b
r
x¢ (2-VAR)
Number of x or (x,y) data points.
Mean of all x or y values.
Sample standard deviation of x or y.
Population standard deviation of x or y.
Sum of all x or y values.
Sum of all x 2 or y 2 values.
Sum of (x … y) for all xy pairs.
Linear regression slope.
Linear regression y-intercept.
Correlation coefficient.
Uses a and b to calculate predicted x value
when you input a y value.
Uses a and b to calculate predicted y value
when you input an x value.
y¢ (2-VAR)
Probability
of arguments.
DIVIDE BY 0 —
¦ You attempted to divide by 0.
¦ In statistics, n=1.
DOMAIN — You specified an argument to a function outside
the valid range. For example:
¦ For x‡: x = 0 or y < 0 and x not an odd integer.
¦ For yx: y and x = 0; y < 0 and x not an integer.
¦ For ‡x: x < 0.
¦ For LOG or LN: x 0.
¦ For TAN: x = 90¡, -90¡, 270¡, -270¡, 450¡, etc.
¦ For SIN-1 or COS-1: |x| > 1.
¦ For nCr or nPr: n or r are not integers ‚ 0.
¦ For x!: x is not an integer between 0 and 69.
limits (88 for Entry Line and 47 for Stat or Constant Entry
lines); for example, combining an entry with a constant that
exceeds the limit.
FRQ DOMAIN — FRQ value (in 1-VAR stats) < 0 or >99, or
not an integer.
OVERFLOW — |q| ‚ 1¯10, where q is an angle in a trig,
hyperbolic, or R4Pr( function.
STAT —
¦ Pressing u with no defined data points.
¦ When not in STAT mode, pressing v, u, or
% w.
Customers in the U.S., Canada, Puerto Rico, and the Virgin
Islands
For general questions, contact Texas Instruments Customer
Support:
phone:
e-mail:
1.800.TI.CARES
(1.800.842.2737)
[email protected]
For technical questions, call the Programming Assistance Group of
Customer Support:
phone:
1.972.917.8324
Customers outside the U.S., Canada, Puerto Rico, and the
Virgin Islands
Contact TI by e-mail or visit the TI calculator home page on the
World Wide Web.
e-mail:
Internet:
[email protected]
www.ti.com/calc
Product Service
Customers in the U.S. and Canada Only
Always contact Texas Instruments Customer Support before
returning a product for service.
Customers outside the U.S. and Canada
Refer to the leaflet enclosed with this product or contact your local
Texas Instruments retailer/distributor.
Other TI Products and Services
Visit the TI calculator home page on the World Wide Web.
www.ti.com/calc
SYNTAX — The command contains a syntax error: entering
more than 23 pending operations or 8 pending values; or
having misplaced functions, arguments, parentheses, or
commas.
Warranty Information
Customers in the U.S. and Canada Only
One-Year Limited Warranty for Electronic Product
H
Calculates the number of possible permutations
nPr
of n items taken r at a time, given n and r. The
order of objects is important, as in a race.
Calculates the number of possible combinations
nCr
of n items taken r at a time, given n and r. The
order of objects is not important, as in a hand of
cards.
A factorial is the product of the positive integers
!
from 1 to n. n must be a positive whole number
69.
RAND Generates a random real number between 0 and
1. To control a sequence of random numbers,
store an integer (seed value) ‚ 0 to rand. The
seed value changes randomly every time a
random number is generated.
Generates
a random integer between 2 integers, A
RAND[
and B, where A { RAND[ { B. Separate the 2
integers with a comma.
Battery Replacement
1. Using a small Phillips screwdriver, remove screws from
back case.
2. Remove protective cover. Starting from the bottom,
carefully separate front from back. Caution: Be careful
not to damage any internal parts.
3. Using a small Phillips screwdriver (if necessary),
remove old battery; replace with new one.
Caution: Avoid contact with other TI-30X Ö components
while changing the battery.
4. If necessary, press & and - at the same time to
reset the TI-30X Ö (clears memory and all settings).
Caution: Dispose of old batteries properly. Do not
incinerate batteries or leave where a child can find them.
In Case of Difficulty
Review instructions to be certain calculations were
performed properly.
Press & and - at the same time. This clears all
memory and settings.
Check the battery to ensure that it is fresh and properly
installed.
Change the battery when:
¦ & does not turn the unit on, or
¦ The screen goes blank, or
¦ You get unexpected results.
To continue using the TI-30X ×S (Battery/Solar)† until
you can change the battery:
1. Expose the solar panel to brighter light.
2. Press & and - at the same time to reset the
calculator. This clears all settings and memory.
† Operates in well-lit areas using solar cell. Operates in
other light settings using battery.
This Texas Instruments (“TI”) electronic product warranty extends
only to the original purchaser and user of the product.
Warranty Duration. This TI electronic product is warranted to the
original purchaser for a period of one (1) year from the original
purchase date.
Warranty Coverage. This TI electronic product is warranted against
defective materials and construction. THIS WARRANTY IS VOID IF
THE PRODUCT HAS BEEN DAMAGED BY ACCIDENT OR
UNREASONABLE USE, NEGLECT, IMPROPER SERVICE, OR
OTHER CAUSES NOT ARISING OUT OF DEFECTS IN
MATERIALS OR CONSTRUCTION.
Warranty Disclaimers. ANY IMPLIED WARRANTIES ARISING
OUT OF THIS SALE, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION
TO THE ABOVE ONE-YEAR PERIOD. TEXAS INSTRUMENTS
SHALL NOT BE LIABLE FOR LOSS OF USE OF THE PRODUCT
OR OTHER INCIDENTAL OR CONSEQUENTIAL COSTS,
EXPENSES, OR DAMAGES INCURRED BY THE CONSUMER OR
ANY OTHER USER.
Some states/provinces do not allow the exclusion or limitation of
implied warranties or consequential damages, so the above
limitations or exclusions may not apply to you.
Legal Remedies. This warranty gives you specific legal rights, and
you may also have other rights that vary from state to state or
province to province.
Warranty Performance. During the above one (1) year warranty
period, your defective product will be either repaired or replaced
with a reconditioned model of an equivalent quality (at TI’s option)
when the product is returned, postage prepaid, to Texas
Instruments Service Facility. The warranty of the repaired or
replacement unit will continue for the warranty of the original unit or
six (6) months, whichever is longer. Other than the postage
requirement, no charge will be made for such repair and/or
replacement. TI strongly recommends that you insure the product
for value prior to mailing.
Software. Software is licensed, not sold. TI and its licensors do not
warrant that the software will be free from errors or meet your
specific requirements. All software is provided “AS IS.”
Copyright. The software and any documentation supplied with this
product are protected by copyright.
All Customers Outside the U.S. and Canada
For information about the length and terms of the warranty, refer to
your package and/or to the warranty statement enclosed with this
product, or contact your local Texas Instruments retailer/distributor.
ENG
30XÖàOMà1L1/A
Page 2
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ENG
30XÖàOMà1L1/A
Page 3
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ENG
30XÖàOMà1L1/A
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Page 4
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Texas Instruments
7800 Banner Dr.
Dallas, TX 75251 U.S.A.
¾
Texas Instruments Holland B.V.
Rutherfordweg 102
3542 CG Utrecht - The Netherlands
www.ti.com/calc
ENG
30XÖàOMà1L1/A
Page 5