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Online Math Solver

 Depdendent Variable

 Number of equations to solve: 23456789
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 Dependent Variable

 Number of inequalities to solve: 23456789
 Ineq. #1:
 Ineq. #2:

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 Ineq. #4:

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CALCULATOR TEXAS INSTRUMENTS CONVERT DECIMALS INTO FRACTIONS
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FEATURES OF THE LARGE DISPLAY SCIENTIFIC CALCULATORS
Categories

VisAble Scientific Calculator

Physical Description

• 41 keys
• 9" by 6.2" by 1.5" height
• weighs 14 ounces
• enlarged keys (0.7 inch) with high visibility imprinting
• high contrast white or yellow print on black or dark blue (operations) keys except 2nd function key is black print on yellow
• keys require positive activation, eliminating faulty entries by users with diminished manipulation skills

Visual Display

Voice response for all keys of the keyboard

No

Graphing Capabilities

No

On/Off

• To switch ON, press the AC/ON key
• To turn OFF, press the OFF button
• After six minutes without a keystroke, the calculator will turn off automatically
• After an automatic power down, the calculator can be turned back on without clearing memory by pressing the CE/C key

Distinctly marked keys for easy identification

5

Most/all keys have _____ functions

Two (However, some have one.)

Memory Positions

One
(Uses memory store, recall, exchange, and sum functions and fully implements order of operations: Parentheses, multiplication, division, addition, subtraction)

Accessories

• 3Vdc (CR2450) battery (projected life of over five years of continuous use)
• large print owner's manual (16 point) spiral bound for flat opening (Spanish translation coming soon)
• 1-yr warranty

Basic Keys: decimal, =, 0-9

Yes

Basic Function Keys: +, -, ×, ÷

Yes

Parentheses ( )

Yes  (Three levels)

Backspace Key

No

Clear last entry Key

Yes

+/Key

Yes

Scientific Notation

Yes

Engineering Notation

No

Fix Display Decimal Key

No

Square Root Key

Yes

Cube Root Key

No

x2 Key

Yes

1/x Key

Yes

% Key

Yes

Degrees Key

Yes

Yes

Yes

Sin Key

Yes

Cos Key

Yes

Tan Key

Yes

Sin-1 (arc sin) Key

Yes

Cos-1 (arc cos) Key

Yes

Tan-1 (arc tan) Key

Yes

π Key

Yes

e Key

No

Ln Key

Yes

Log Key

Yes

ex Key

Yes

10x Key

Yes

yx Key

Yes

x y Key

Yes

x! Key

Yes

Hyperbolic Sin Key

No

Hyperbolic Cos Key

No

Hyperbolic Tan Key

No

Hyperbolic Sin-1 Key

No

Hyperbolic Cos-1 Key

No

Hyperbolic Tan-1 Key

No

Fraction entry, operation and conversion to decimal keys

No

Constant key (K) stores a number and its associated operation for repeated use

Yes

Fahrenheit/Celsius conversion keys

No

Degree, minute, second/decimal degree conversion keys

Yes

Polar/Rectangular conversion keys

Yes

Special Functions for Mortgage, Real Estate and Business

No

Special Functions for Statistics

Yes
(Date entry and removal, mean, population standard deviation, sample standard deviation, variance, sum of data values, and clear keys)

Calculations and conversions in hexadecimal, octal, and binary number bases

No

Boolean logic operations, computer math keys

No

Time, Alarm, and Chronometer Functions

No

Print on/off Key

No

Manufacturer

Betacom Corporation
2999 King Street West Inglewood, Ontario Canada, LON 1KO
Phone: 800-353-1107, Fax: 905-838-1487
Email:
Website:

\$295 + \$5 shipping

Possible Vendors:

• Telesensory Corporation
520 Almanor Avenue
Sunnyvale, CA 94086
Phone: 800-804-8004
Direct: (408) 616-8700
Fax: (408) 616-8720
Email:
Website:
• Associated Resources
St. Louis, MO
Phone: 314-940-2397
• Christal Vision Texas
210-666-0700
• Visual Tech of New York
914-735-7907