Question about Office Equipment & Supplies

**The LED screen is in its last days. Replace the entire unit as the replacement circuit cost more than a new calculator. **

Posted on May 10, 2014

Hi,

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Posted on Jan 02, 2017

SOURCE: Inputing factors on a casio fx-115es calculator

Unless I am failing to understand your problem, just combine like terms to get:

9x^2+2x+4 and then enter those coefficients into the quadratic solver.

That will get you the two answers -- both of them will be complex.

If you wanted to turn those two answers into factors (complex) of the original equation simply

change the signs on each and put an x in front.

Of course, the quadratic formula would also work.

CG

Posted on Apr 28, 2009

SOURCE: Hi, I have a Casio calculator fx-991MS giving me wrong answers!

Hello,

I am only looking for a plausible cause of the error, because I do not believe your calculator can make such a mistake. I think you **accidentally activated the Exponential display format** and did not pay attention to the small, raised -03 that came at the end of the number displayed. It is a common mistake for those not very familiar with Scientific or exponential notation.

Let us try to reset your calculator to the normal (floating point) format.

Press the [MODE] key a number of times until you reach a screen that has FIX, SCI, NORM and under each one a number (FIX 1, SCI 2), Norm 3). To have the number of decimal place you gave in your result (4 decimal digits), you press 1 to select Fix then 4.

Be aware that scientific calculators usually stop displaying results in floating point format ( 0.0000045 ) if the number is smaller then 0.001. So basically, 0.00099 will be displayed as 9.90-04, -04 being raised above the level, and in smaller size.

Hope it helps.

Posted on Oct 02, 2009

Testimonial: *"Thanks so much, its working now:) I thought I was going to have to buy a new calculator!"*

SOURCE: Percenteg Function problem in my Casio MJ - 120 Model Calculator

I found it by myself, I can help you.

1. Press (AC)

2. Hold (Rate) for about 2-3 second

3. Press (Set / TAX+)

4. Input the tax rate

5. Press (Set / TAX+)

6. Hold (Rate) for about 2-3 second again

7. Press (Set / TAX+) again

And Then you can test the rate .

From Thailand

Posted on Oct 19, 2009

SOURCE: How to do standard deviation calculations?

Parameter Value

Mean 500

Standard deviation 100

Left cutoff 400

Right cutoff 600

Results

Probability to the left of the tail 15.87%

Probability in the center 68.26%

Probability to the right of the tail 15.87%

Posted on Jun 21, 2010

SOURCE: trying to calculate exponents on

If you want to get really basic and not mess around with a lot of fancy buttons and whatnot, simply put in 3.2 X 10 then push the ^ button and then (-)7. Over to the left, the third button down should look like ( - ), push that and then the 7 to avoid all the parethesis mistakes.

Posted on Oct 16, 2010

The median is the number is the middle.

Using the calculator, you can follow the Statistical Calculations (Stat) on pages 22 and 23 of the attached manual. http://support.casio.com/pdf/004/fx-570_991ES_PLUS_E.pdf

However, it might be quicker to just put the numbers is order from lowest to highest and pick out the number in the middle.

For example, take the numbers 3, 5, 4, 7, 6, 4, 9.

Putting them in order, we get 3, 4, 4, 5, 6, 7, 9

There are 7 numbers so we want the 4th number (3 numbers to the right and 3 numbers to the left). In this case, the 4th number is 5 and that is our median, as half the numbers are lower than it and half the numbers are higher than it. It the number of numbers is even, you take the average of the two middle numbers.

Good luck,

Paul

Using the calculator, you can follow the Statistical Calculations (Stat) on pages 22 and 23 of the attached manual. http://support.casio.com/pdf/004/fx-570_991ES_PLUS_E.pdf

However, it might be quicker to just put the numbers is order from lowest to highest and pick out the number in the middle.

For example, take the numbers 3, 5, 4, 7, 6, 4, 9.

Putting them in order, we get 3, 4, 4, 5, 6, 7, 9

There are 7 numbers so we want the 4th number (3 numbers to the right and 3 numbers to the left). In this case, the 4th number is 5 and that is our median, as half the numbers are lower than it and half the numbers are higher than it. It the number of numbers is even, you take the average of the two middle numbers.

Good luck,

Paul

May 16, 2016 | Casio Fx-570es Scientific Calculator

DEG says that the angle unit is set to degrees. You can change it to RADians, or GRADs. However much you want to get rid of all of them you will always have one of them. Learn to live with them.

FIX says that the decimal displays will always show a fixed number of decimals.** You can decide how many you keep. **Apparently your calculator is configured not to show any decimal digits: the number of fixed digits is set to zero. Change it to some other number

There are other display formats : Engineering ENG, and Scientific (SCI)

There is another format (possibly 2) called Norm 1 or Norm 2.

Set you calculator to one of the Normal formats.

Press** SHIFT MODE** to enter **(Setup)** and configure.

Advice: Learn to use your calculator. The best way to achieve mastery is to look inside the manual whenever you do not understand something.

FIX says that the decimal displays will always show a fixed number of decimals.

There are other display formats : Engineering ENG, and Scientific (SCI)

There is another format (possibly 2) called Norm 1 or Norm 2.

Set you calculator to one of the Normal formats.

Press

Advice: Learn to use your calculator. The best way to achieve mastery is to look inside the manual whenever you do not understand something.

Dec 06, 2013 | Casio FX-300 Plus Scientific Calculator...

It seemed there is no Modulo function in fx-100MS. But Mod is just the remainder of a division operator.

So if you have A mod B = C, divide A by B, subract the remaining whole number, and multiply it by B to get C.

Example:

7 mod 4 = 3

In the Calculator:

7 / 4 = 1.75, then 1.75 - 1 = 0.75. Then 0.75 x 4 = 3

So if you have A mod B = C, divide A by B, subract the remaining whole number, and multiply it by B to get C.

Example:

7 mod 4 = 3

In the Calculator:

7 / 4 = 1.75, then 1.75 - 1 = 0.75. Then 0.75 x 4 = 3

May 30, 2011 | Casio FX-300MS Calculator

Unfortunately you can't. If the magnitude of the number is too small or too large, the calculator automatically switches to scientific notation. Consider a number that has 30 zeros before it instead of the 3 in this example. How is that going to fit on the screen?

Nov 11, 2010 | Casio FX-115ES Scientific Calculator

Hi,

You must change the number display to FIX. Press [MODE][7:] followed by a number betwee 0 and 7. This will set the number of decimal digits. Be warned that the Indicator FIX will be displayed on the screen.

This information is for the FX250D, but I trust it is also valid for the FX-250HC. If it is not, just look in your manual. If you cannot find yours, do not blame me, I cannot get hold of a manual for this calculator.

You can always take the time to play with the [MODE] key followed by [.] or a number. When you press the mode + number, look on the screen to see what indicator appears (deg, Fix, Rad) The one that makes FIX appaear is the one that gets you out of the exponential scientific mode.

Good luck

You must change the number display to FIX. Press [MODE][7:] followed by a number betwee 0 and 7. This will set the number of decimal digits. Be warned that the Indicator FIX will be displayed on the screen.

This information is for the FX250D, but I trust it is also valid for the FX-250HC. If it is not, just look in your manual. If you cannot find yours, do not blame me, I cannot get hold of a manual for this calculator.

You can always take the time to play with the [MODE] key followed by [.] or a number. When you press the mode + number, look on the screen to see what indicator appears (deg, Fix, Rad) The one that makes FIX appaear is the one that gets you out of the exponential scientific mode.

Good luck

Nov 13, 2009 | Casio FX-250HC Calculator

there is one button ab/c beneath CALC... if u want to calculate 7 mod 4 then... u should press 7 then ab/c 4 and equal to

1, 3 ,4 which is 4*1=4 and 7-4=3 remainder...

1, 3 ,4 which is 4*1=4 and 7-4=3 remainder...

Jun 29, 2009 | Casio FX-115MS Plus Calculator

Alot of people have this doubt, so I might as well make it clear.

Press the 10^x button (while pressing SHIFT, of course; it's exactly above the LOG button) followed by the number whose antilog you desire.

Example :

Let's say we need antilog(-6.8),

1. Press SHIFT, followed by LOG (i.e 10^x); this'll display a 10 on the screen;

2. Type in -6.8;

3. Press "=";

4. This'll display 1.584893192x10^-7 as the solution, which is correct!

5. Bye, lol :P

:-)

Press the 10^x button (while pressing SHIFT, of course; it's exactly above the LOG button) followed by the number whose antilog you desire.

Example :

Let's say we need antilog(-6.8),

1. Press SHIFT, followed by LOG (i.e 10^x); this'll display a 10 on the screen;

2. Type in -6.8;

3. Press "=";

4. This'll display 1.584893192x10^-7 as the solution, which is correct!

5. Bye, lol :P

:-)

Apr 07, 2009 | Casio FX-300MS Calculator

Hello,

If I understand correctly you result do not display any decimal.

If you want a fixed number of decimal digits (exemple 2) Press the [MODE] key a number of times until you reach the screen that displays**Fix Sci Nom ** and under them the numbers **1 2 3**

Press 1 to choose Fixed format followed by 2 for TWO Digits

3 decimal digits [MODE] ---------[1 ] (Fix) 3

Hope it helps.

If I understand correctly you result do not display any decimal.

If you want a fixed number of decimal digits (exemple 2) Press the [MODE] key a number of times until you reach the screen that displays

Press 1 to choose Fixed format followed by 2 for TWO Digits

3 decimal digits [MODE] ---------[1 ] (Fix) 3

Hope it helps.

Feb 13, 2009 | Casio FX-300MS Calculator

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