Question about Casio FX991ES Scientific Calculator

Ad

You cannot use the two words in the same sentence. To use the hyperbolic functions, press the HYP key. The display will show you what follows.

1: hyperbolic sine, 2: hyperbolic cosine, 3: hyperbolic tangent, and their inverses.

To calculate the hyperbolic cosine of the number 27/3, press 1 in the first screen capture, you get **cosh(**. Complete the expression and press=

Posted on Mar 19, 2014

Ad

Hi there,

Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

In the older versions of the OS, the command binompdf( displays a command line where the user is expected to enter the arguments respecting the syntax of the command. In the more recent versions of the OS (the most recent is 2.55 MP) the user enters the input over three lines.

I suggest you upgrade the OS of your calculator to the latest version available on the education.ti.com website.

To upgrade, insert fresh AA batteries (or just good batteries), run TI connect on your computer, connect the calculator to the computer and click the update button on TI connect main screen. It will download and update the OS.

I suggest you upgrade the OS of your calculator to the latest version available on the education.ti.com website.

To upgrade, insert fresh AA batteries (or just good batteries), run TI connect on your computer, connect the calculator to the computer and click the update button on TI connect main screen. It will download and update the OS.

Jun 25, 2012 | Texas Instruments TI-84 Plus Calculator

Math Input/Output. This mode shows the input expression and the result in more commonly seen in math books, with raised exponents, numerator stacked above denominator, and so forth. The other mode, LineIO for Line Input/Output, shows everything on one line.

Mar 28, 2011 | Casio fx-300ES Calculator

The [**U n/d**] key allows users to input mixed
fractions using the TI-30XS/B or TI-34 MultiView scientific calculator.
For example, to input 2 3?4, follow the instructions below:

• Input 2 and press [2nd] [U n/d].

• Input 3 and press [down].

• Input 4 and press [right] [enter].

• Input 2 and press [2nd] [U n/d].

• Input 3 and press [down].

• Input 4 and press [right] [enter].

Oct 09, 2010 | Texas Instruments TI30XS Scientific...

(1) If "Rate set" is printed above [%] key with your calculator,

2. Input Tax Rate and then [%].

* You can check Tax rate by pressing [AC] and then inputting [TAX+]

1. Press [AC] and hold [%] for about two seconds.

2. Input [TAX+].

3. Input Tax Rate and then [%].

* You can check Tax rate by pressing [AC] and then inputting [TAX+]

Oct 01, 2010 | Casio MS-80TV Scientific Calculator

Q2

Please tell me how to do "TAX calculation".

A2

(1) If "Rate set" is printed above [%] key with your calculator,

1. Press [AC] and hold [%] for about two seconds.

2. Input Tax Rate and then [%].

* You can check Tax rate by pressing [AC] and then inputting [TAX+]

1. Press [AC] and hold [%] for about two seconds.

2. Input [TAX+].

3. Input Tax Rate and then [%].

* You can check Tax rate by pressing [AC] and then inputting [TAX+]

(1) How much is Price-plus-Tax of 100?

(2) How much is the Price-less-Tax of 105?

Oct 01, 2010 | Office Equipment & Supplies

If you want to get an answer like 1/2X for d/dx(X^2), you will have to
purchase a CAS calculator like Casio's Algebra FX-2 or Classpad. TI series calculators also have CAS.

However, you can calculate the numerical values of derivatives and integrals only.

To calculate the value of a proper integral:

**∫**xdx from 0 to 2, input as follows:

**∫**dx(X,0,2)

To calculate derivative at a point:

SHIFT+**∫**dx key X^2,3)

Display looks like this: d/dx(X^2,3).

However, you can calculate the numerical values of derivatives and integrals only.

To calculate the value of a proper integral:

- Press the 'ON' key;
- Press the Integral key ;
- Enter your expression (example X^2+X-3 etc);
- Press the 'comma' key after your expression;
- Input the first limit after comma, input comma again after first limit;
- Close brackets;
- Press the equals key, display may return after a while with the answer.

To calculate derivative at a point:

- Press Shift and then the integration key.
- Enter your function;
- Input comma;
- input the point at which you want to evaluate the derivative;
- Close bracket and press enter.

SHIFT+

Display looks like this: d/dx(X^2,3).

Oct 23, 2009 | Casio FX-300MS Calculator

**1. How to set/ change "Tax Rate" **

**(1) If "Rate set" is
printed above [%] key with your calculator,**

1. Press [AC] and hold [%]
for about two seconds.

2. Input Tax Rate and then [%].

* You can check Tax rate by pressing [AC] and
then inputting [TAX+]

**(2) If "Set" is printed above [%]
key with your calculator, **

1. Press [AC] and hold [%] for about two seconds.

2. Input [TAX+].

3. Input Tax Rate and then [%].

* You can check Tax rate by pressing [AC] and then inputting [TAX+]

**2. How to calculate Price-plus-Tax and
Price-less-Tax.**

**(1) How much is Price-plus-Tax of
100? ****
**Press [AC], and input 100 and then press [TAX+].

Calculator will display 105 if tax rate is 5%

If you press [Tax+] again, it will show the tax amount..

**(2) How much is the Price-less-Tax of
105? ****
**Press [AC], and input 105 and the press [TAX-].

Calculator will display 100 if tax rate is 5%

If you press [Tax-] again, it will show the tax amount..

Jul 29, 2009 | Canon LS-100TS Calculator

Hi....by looking at the date you posted this question, you may have already found the answer, but just in case you haven't......the procedure for adding and subtracting on these calculators is completely opposite of a regular calculator. On a regular calculator, you would input 4 - 4 = 0. On these type of calculators, a number's positive or negative status is keyed in AFTER the number, instead of before it. Therefore, you input 4 + 4 - (notice you DO NOT input = at the end, but if you are in print mode, you will need to hit your total key, which looks like an asterisk, where the = would normally be, in order for the final value of your calculations to print on the paper tape.

Multiplication and division equations are done exactly as they are on a regular calculator....4 x 4 = 16.

Hope this helps. If you have your owners manual, it should also give you some examples of how to perform calculations with your calculator.

Multiplication and division equations are done exactly as they are on a regular calculator....4 x 4 = 16.

Hope this helps. If you have your owners manual, it should also give you some examples of how to perform calculations with your calculator.

Dec 11, 2008 | Canon P170-DH Calculator

they call it hardware malfunction. try removing all batteries in it and wait for 30 seconds before reinserting the batteries. If the same problem still exist, the unit is permanently damaged.

Aug 23, 2007 | Casio MS-80TV Scientific Calculator

press AC
press and hold set key for2 seconds, until zero appears on the screen
press tax+
input tax rate
press set
check by pressing AC, then pressing tax+ key. It should be the tax rate you inputed.

Aug 18, 2007 | Casio DF-120TV Calculator

574 people viewed this question

Usually answered in minutes!

thanks but the problem is numbers are always tricky!

×