The math operator keys suddenly stopped working (+ - * / )

Hi please click on this link and select the symptoms according to the problem you are facing

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Posted on Jun 10, 2008

The contacts might be bad or battery too low. If you have a reset button on it try pressing it.

Posted on Jun 10, 2008

Have you changed the battery?

Posted on Jun 10, 2008

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Posted on Jan 02, 2017

The TI-84 is a bit of a pain this way. You need to access the logBASE function either through the catalog or the MATH menu. You can't spell the function name as with some other calculators.

Press MATH, scroll down to the logBASE entry, then press ENTER. This will put "logBASE(" into the entry line. You can then enter the arguments and press ENTER to calculate the result. For example, to calculate the log base 2 of 8, press MATH, down-arrow a number of times to logBASE, press ENTER 8 , 2 ENTER. This should give you 3.

Press MATH, scroll down to the logBASE entry, then press ENTER. This will put "logBASE(" into the entry line. You can then enter the arguments and press ENTER to calculate the result. For example, to calculate the log base 2 of 8, press MATH, down-arrow a number of times to logBASE, press ENTER 8 , 2 ENTER. This should give you 3.

Apr 02, 2014 | Texas Instruments TI-84 Plus Calculator

To calculate logarithms to a base other than e or 10, use the logBASE function in the MATH MATH menu. Press the MATH key, then scroll up/down to logBASE.

Dec 12, 2013 | Texas Instruments TI-84 Plus Calculator

The alpha key activates the alphabet keyboard and a few extra symbols. To access the MATH menu and the ToFrac command, press the key below the ALPHA key. The key is marked with MATH.

On the TI84PLUS with the newer operating systems (version2.5x), the APLHA key opens up a few functionalities. That is not available on the TI 83Plus.

On the TI84PLUS with the newer operating systems (version2.5x), the APLHA key opens up a few functionalities. That is not available on the TI 83Plus.

Sep 02, 2013 | Texas Instruments TI-83 Plus Calculator

It is a calculator and prqactically every button is a MATH button. It
depends on what MATH you intend to do. Put the calculator in Run/Mat
screen then press the OPTN key. You will see several tabs. Press the
function key under a TAB and explore what is offered. Go through all the
keys (F6 also) and see what the new tabs do.

In general it is most helpful to read the manual that shipped with the calculator.

In general it is most helpful to read the manual that shipped with the calculator.

Oct 16, 2012 | Casio Calculator Graphing FX 9750GII...

It depends on the version of the Operating system.

This works for Older and newer OS

Enter numerator, press the [division key], enter the denominator, press the [MATH] key and select [1:ToFrac] [ENTER]

With the newer OS versions 2.53 MP and following you can manipulate fraction more easily. If your calculator MODE is set to MathPrint, you can use the [Alpha][Function keys] to access some functionalities

This gives you access to the Tabs shown in the following screen capture.

Press 1:n/d for improper fractions or 2:Un/d for mixed numbers.

Press [ALPHA][Y=/F1] to activate the FRAC menu. You get a template for a stacked fraction, where you enter the numerator and denominator at their right places. Note that fractions are always reduced to their simplest forms.

This works for Older and newer OS

Enter numerator, press the [division key], enter the denominator, press the [MATH] key and select [1:ToFrac] [ENTER]

With the newer OS versions 2.53 MP and following you can manipulate fraction more easily. If your calculator MODE is set to MathPrint, you can use the [Alpha][Function keys] to access some functionalities

This gives you access to the Tabs shown in the following screen capture.

Press 1:n/d for improper fractions or 2:Un/d for mixed numbers.

Press [ALPHA][Y=/F1] to activate the FRAC menu. You get a template for a stacked fraction, where you enter the numerator and denominator at their right places. Note that fractions are always reduced to their simplest forms.

Aug 25, 2011 | Texas Instruments TI-84 Plus Calculator

The power key is marked ^ and is located just above the divide key. For example, to calculate 2 raised to the 7th power, press 2 ^ 7 ENTER

There is no key for the universal root. The operation is available in the MATH MATH menu. For example, to calculate the 7th root of 128, press 7 MATH 5 1 2 8 ENTER

There is no key for the universal root. The operation is available in the MATH MATH menu. For example, to calculate the 7th root of 128, press 7 MATH 5 1 2 8 ENTER

Aug 04, 2011 | Texas Instruments TI-84 Plus Calculator

Press the MATH key to bring up the Math menu. Select "Real" and then "HMS->". This function takes an angle in DDD.MMSS format and converts to decimal degrees. The "->HMS" function goes the other way.

Mar 14, 2011 | HP 40g Calculator

LBrown18062@hotmail.com My manual is 75 pages. I can email it to you. Please put Casio FX-115ES as the subject. Awaiting your response.

fx-115ES User's Guide

About this Manual

• The MATH mark indicates an example that uses Math format,

while the LINE mark indicates Linear format. For details about

input/output formats, see "Specifying the Input/Output Format".

• Keycap markings indicate what a key inputs or what function it

performs.

Example: 1, 2, +, -, !, A, etc.

• Pressing the 1 or S key followed by a second key performs

the alternate function of the second key. The alternate function is

indicated by the text printed above the key.

• The following shows what the different colors of the alternate

function key text mean.

If key marking

text is this color: It means this:

Yellow

Press 1 and then the key to access

the applicable function.

Red

Press S and then the key to input the

applicable variable, constant, or symbol.

Purple (or enclosed Enter the CMPLX Mode to access the

in purple brackets) function.

Green (or enclosed Enter the BASE-N Mode to access the

in green brackets) function.

• The following shows an example of how an alternate function

operation is represented in this User's Guide.

Example:1s(sin-1)1=

Indicates the function that is accessed by the key

operation (1s) before it. Note that this is not part

of the actual key operation you perform.

sin-1{D}

Keycap function s

Alternate function

fx-115ES User's Guide

About this Manual

• The MATH mark indicates an example that uses Math format,

while the LINE mark indicates Linear format. For details about

input/output formats, see "Specifying the Input/Output Format".

• Keycap markings indicate what a key inputs or what function it

performs.

Example: 1, 2, +, -, !, A, etc.

• Pressing the 1 or S key followed by a second key performs

the alternate function of the second key. The alternate function is

indicated by the text printed above the key.

• The following shows what the different colors of the alternate

function key text mean.

If key marking

text is this color: It means this:

Yellow

Press 1 and then the key to access

the applicable function.

Red

Press S and then the key to input the

applicable variable, constant, or symbol.

Purple (or enclosed Enter the CMPLX Mode to access the

in purple brackets) function.

Green (or enclosed Enter the BASE-N Mode to access the

in green brackets) function.

• The following shows an example of how an alternate function

operation is represented in this User's Guide.

Example:1s(sin-1)1=

Indicates the function that is accessed by the key

operation (1s) before it. Note that this is not part

of the actual key operation you perform.

sin-1{D}

Keycap function s

Alternate function

Jan 19, 2011 | Casio FX-115ES Scientific Calculator

The x^-1 key is in the leftmost column of the keyboard, below the MATH key.

If you want the inverse trig functions, press 2ND then the trig function key.

If you want the inverse trig functions, press 2ND then the trig function key.

Jan 13, 2011 | Texas Instruments TI-84 Plus Calculator

Try reinstalling, might be memory got used up

Aug 24, 2009 | Texas Instruments TI-84 Plus Calculator

Nov 24, 2011 | HP 48gx Calculator

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