Question about Texas Instruments TI-15 Explorer Calculator

Hello,

You can still that on the TI 15 explorer (look for constant calculations page 57 in your user manual or maybe the teacher's guide that you can download from education.ti.com)**1. First you define the operation you want to perform, using the OP1 key as follows [OP1] [+] [6] [OP1] this sequence stores the operation you intend tu use repeatedly.2. Since you want multiples you must start the sequence with 0You do that by keying in the number 03. Press [OP1] repeatedly. **

Each time you press [OP1] a counter shown on the lower left corner of the screen increases its value by 1, and the result (on the lower right corner) shows you the next multiple.

If you just want to add the same number repeatedly starting from some chosen number, in step 2 above use any number but zero.

[OP1] [+] [6] [OP1]

2

[OP1] [OP1] [OP1 etc.

will generate the numbers 2+6=8, 14, 20 etc.

Hope it helps

Posted on Aug 20, 2009

1and 5/7 ==1.7142 (5/7 to get decimal point=.7142)

+ 9 divided by minus 1.7142= minus 5.1688

using the maths laws of multiplication and division of numbers where + and - indicies are used +X+ =+ and + X - = - and - X- = +

you will find answers on the web maths pages

+ 9 divided by minus 1.7142= minus 5.1688

using the maths laws of multiplication and division of numbers where + and - indicies are used +X+ =+ and + X - = - and - X- = +

you will find answers on the web maths pages

Oct 06, 2014 | Calculators

Use the fraction key [a b/c]

7 5/9 is entered as 7 [a b/c] 5 [a b/c] 9 [=/ ENTER/ EXE]

7 5/9 is entered as 7 [a b/c] 5 [a b/c] 9 [=/ ENTER/ EXE]

Sep 30, 2014 | Texas Instruments TI-15 Explorer...

For negative numbers (not just exponents), make sure you use the (-) key just to the right of the decimal point key, not the - key for subtraction.

For what follows I'm going to assume you have at least version 2.53 of the operating system for the 84Plus. If you have an older version, I STRONGLY recommend you update it:

http://education.ti.com/educationportal/sites/US/productDetail/us_os_84plus.html

You can use the "n/d" command in the MATH/NUM menu to enter the division bar. For example, to enter 1/2, press 1 MATH right-arrow ALPHA [D] 2 ENTER. If you just want the number, you can also enter it as 1 / 2.

You can convert a decimal number to a fraction using the >Frac command in the MATH menu. For example, to convert 0.2 to a fraction, press . 2 MATH 1 ENTER.

For what follows I'm going to assume you have at least version 2.53 of the operating system for the 84Plus. If you have an older version, I STRONGLY recommend you update it:

http://education.ti.com/educationportal/sites/US/productDetail/us_os_84plus.html

You can use the "n/d" command in the MATH/NUM menu to enter the division bar. For example, to enter 1/2, press 1 MATH right-arrow ALPHA [D] 2 ENTER. If you just want the number, you can also enter it as 1 / 2.

You can convert a decimal number to a fraction using the >Frac command in the MATH menu. For example, to convert 0.2 to a fraction, press . 2 MATH 1 ENTER.

Mar 16, 2011 | Texas Instruments TI-84 Plus Silver...

A fraction is just a particular number.

- Enter numerator of first fraction
- Press the division sign
- Enter the denominator of first fraction
- Press the multiplication key
- Enter second numerator
- Press the division key
- Enter the denominator of second fraction
- If you want a decimal result press [ENTER]
- However, if you want a fraction press [MATH][1:

Sep 21, 2010 | Texas Instruments TI-83 Plus Calculator

The primary key to enter something that resembles a fraction is the division key, the one above the multiplication key.

However, any division you enter yields a decimal number, unless the result is an integer.

To keep the result of a division as a (reduced) fraction use the [|=>Frac] or [ToFrac] command. It is accessible by the following key sequence

[MATH][1:ToFrac].

Insert it after the fraction, before pressing the [ENTER] key to get the result.

By pressing [MATH][2:ToDec] you convert a fraction in to a decimal number.

However, any division you enter yields a decimal number, unless the result is an integer.

To keep the result of a division as a (reduced) fraction use the [|=>Frac] or [ToFrac] command. It is accessible by the following key sequence

[MATH][1:ToFrac].

Insert it after the fraction, before pressing the [ENTER] key to get the result.

By pressing [MATH][2:ToDec] you convert a fraction in to a decimal number.

Apr 10, 2010 | Texas Instruments TI-83 Plus Calculator

A fraction is in fact a ratio of two number: a division of a numerator by a denominator. The key used for the division operation is the one above the multiplication sign and below the caret [^], and in thee rightmost column of keys.

Beware that this calculator converts any ratio of two numbers into a decimal value. To keep a fraction in a fraction form you must use the [|=>Frac] or [ToFrac] command. To convert a decimal result to a fraction, use the [|=>Dec] command.

These commands are accessible through the CATALOG or more easily by pressing [MATH] (under the ALPHA key) and selecting [1:|=>Frac], or [2:|=>Dec]

Ex: to keep 27/48 in fraction form you enter

27 [/] 48 [MATH][1:|=>Frac] [ENTER]. Result is 9/16

You will notice that the resulting fraction is reduced to its simplest form.

To convert the above result from fraction to decimal press [MATH][2:|=>Dec]

A fraction can always be approximated by a decimal value but the converse is not always possible.

Beware that this calculator converts any ratio of two numbers into a decimal value. To keep a fraction in a fraction form you must use the [|=>Frac] or [ToFrac] command. To convert a decimal result to a fraction, use the [|=>Dec] command.

These commands are accessible through the CATALOG or more easily by pressing [MATH] (under the ALPHA key) and selecting [1:|=>Frac], or [2:|=>Dec]

Ex: to keep 27/48 in fraction form you enter

27 [/] 48 [MATH][1:|=>Frac] [ENTER]. Result is 9/16

You will notice that the resulting fraction is reduced to its simplest form.

To convert the above result from fraction to decimal press [MATH][2:|=>Dec]

A fraction can always be approximated by a decimal value but the converse is not always possible.

Jan 23, 2010 | Texas Instruments TI-84 Plus Calculator

Hi,

You can write a fraction by dividing an integer number by another but it will not be displayed as you enter it. It becomes a decimal number.

However, if you want to keep it in fraction form (but reduced to its simplest form) you use the command [|=>Frac] . The arrow is a short, fat one.

To access the command

Press [MATH][1:ToFrac] [ENTER]

Ex: you enter 27/48 [MATH][1:ToFrac][ENTER]

Calculator displays 9/16

So you can keep numbers (in reduced form) by inserting [MATH][1:ToFRac] before pressing the [ENTER] key.

Hope it helps.

Thank you for rating the solution.

You can write a fraction by dividing an integer number by another but it will not be displayed as you enter it. It becomes a decimal number.

However, if you want to keep it in fraction form (but reduced to its simplest form) you use the command [|=>Frac] . The arrow is a short, fat one.

To access the command

Press [MATH][1:ToFrac] [ENTER]

Ex: you enter 27/48 [MATH][1:ToFrac][ENTER]

Calculator displays 9/16

So you can keep numbers (in reduced form) by inserting [MATH][1:ToFRac] before pressing the [ENTER] key.

Hope it helps.

Thank you for rating the solution.

Dec 10, 2009 | Texas Instruments TI-83 Plus Calculator

Hello,

You should specify your calculator and avoid posting the same question multiple times.)

Here is the solution for FX-300ES

Between the x`squared key and the log key there is a key with an x with a raised small figure of a solid square. That is the key you use to enter arbitrary exponents.

You should specify your calculator and avoid posting the same question multiple times.)

Here is the solution for FX-300ES

Between the x`squared key and the log key there is a key with an x with a raised small figure of a solid square. That is the key you use to enter arbitrary exponents.

- If calculator is in MathIO ( a Math indicator appears on the upper band of the screen), enter the base of the power (here 2). A number 2 with a raised empty square appears.The cursor will blink in the raised square. Enter there the exponent (here 12) and press [=]. Result 4096 appears at the bottom of the screen.
- If in LineIO (no Math indicator appears on the narrow band at the top of the screen), press 2 and then the key I talked about above. On the screen a number 2 appears with a hat and a left parenthesis. Type in the exponent (here 12) , the right parenthesis and press [=]. The calculator should display 4096.000...

Nov 17, 2009 | Calculators

Hello,

There is no fraction button. Any division of two integers you do is represented as a decimal number. If you want your fraction to remain a fraction you enter it as follows

**7[ / ] 19 [ MATH][1:ToFrac] [=] displays 7/19**

If you want to convert a decimal number into a proper fraction press**[MATH][1:ToFrac] .**

Exemple 7/19 [ENTER] gives .36842105. If without doing anything else, you press [MATH][1:ToFrac] you recover 7/19.

There are limitations related to the number of decimal digits in the floating point number.

.3684 [MATH][1:ToFrac][=] gives 921/2500 but

.36842 [MATH][1:ToFrac][=] gives .36842 : it is not converted to fraction.

Hope it helps

There is no fraction button. Any division of two integers you do is represented as a decimal number. If you want your fraction to remain a fraction you enter it as follows

If you want to convert a decimal number into a proper fraction press

Exemple 7/19 [ENTER] gives .36842105. If without doing anything else, you press [MATH][1:ToFrac] you recover 7/19.

There are limitations related to the number of decimal digits in the floating point number.

.3684 [MATH][1:ToFrac][=] gives 921/2500 but

.36842 [MATH][1:ToFrac][=] gives .36842 : it is not converted to fraction.

Hope it helps

Sep 16, 2009 | Texas Instruments TI-83 Plus Calculator

Hello,

There is no such button, but there is a command accsssible as follows

[MATH] right arrow to highlight [NUM] and 5:int( [ENTER] In short

[MATH][NUM][5][ENTER]

The command appears on home screen, where you give it the decimal number whose inter part you want.

Ex; int(15.87) gives 15

You shoul explore the catalog of all commands avaible on your calculator. You press [2nd][CATALOG] (under the digit 0) and scroll down or up. If you know the command, while in [catalog] press [ALPHA] and enter the first letter of the command. The cursor moves to the first occurrence of the letter and you can then scroll more to reach the command.

Hope it helps

There is no such button, but there is a command accsssible as follows

[MATH] right arrow to highlight [NUM] and 5:int( [ENTER] In short

[MATH][NUM][5][ENTER]

The command appears on home screen, where you give it the decimal number whose inter part you want.

Ex; int(15.87) gives 15

You shoul explore the catalog of all commands avaible on your calculator. You press [2nd][CATALOG] (under the digit 0) and scroll down or up. If you know the command, while in [catalog] press [ALPHA] and enter the first letter of the command. The cursor moves to the first occurrence of the letter and you can then scroll more to reach the command.

Hope it helps

Jun 04, 2009 | Texas Instruments TI-84 Plus Calculator

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