Casio Scientific Calculator Fx-82es Plus - Answered Questions & Fixed issues

Can I solve 3x^3 -2x^2+5x=7
5x^3-4x^2+4x=6
4x^3-3x^2+6x=8
These equations by using Casio fx-82ES PLUS Calculator?????

Buy an FX 991ES.

No you cannot.

If it is a solar calculator, it can stay on after you remove battery. Keep it in the dark, without its battery.

I am sorry there are no statistical probability distribution functions on the FX-82ES calculators. Try with the FX-991ES.

If you want to square an expression enclose it in parentheses and raise to the second power.

The calculator has two symbols to use as decimal separators but it does does separate the thousands.

There is an ABS key on the left of the first row of keys, but no "APPS". You can find the User's Guide here: http://support.casio.com/en/manual/004/fx-82_85_95_350ES_PLUS_EN.pdf

Some people do not care much about the packaging and throw it. From what I know about these calculators, in North America they ship in a clam shell (plastic wrap) and not a box. I do not believe it proves anything. Unless you have a written document with a serial number. But these calculators do not have a serial number. Go buy yourself a calculator and take better care of it.

I am sorry to disappoint you. I looked on the back of two different Casio Calculators and there is nothing that could be considered a Serial Number (Unique Identification number). If you had a serial number on a bill of sale or receipt and find the calculator with the same serial number you could claim it is your. But there is no such a number for this class of calculators. Get yourself another one and take better care of it. How do you know the person you accuse of stealing your calculator has not bought one too?

Press SHIFT 9 3 =See page E-2 of this manual: http://support.casio.com/en/manual/004/fx-82ES_etc_EN.pdf

In what context? In the unit conversions it's "inches." In the key markings, if you mean "ln" (lowercase 'ell' not capital 'eye') then it's "natural logarithm."

Use the equivalent definition cot(x)=1/tan(x)

Press SHIFT MODE 7 then specify the number of digits you want after the decimal point.

The way to do it is this; Divide the number by 2, get the integer quotient for the next iteration. Get the remainder for the binary digit, repeat the steps until the quotient is equal to 0.

It is because it is not set up correctly. For you to fix it, just press on the lower right button for few seconds till it displays " cas10" then let go of the button

Here is the Service Manual, but in normal instances, you would just buy another one, or return it to Casio for service.

Casio DR-120LB Service Manual

ManualsLib https://www.manualslib.com > ... > DR-120LB View and Download Casio DR-120LB service manual online. DR-120LB cash register pdf manual download. Also for: Dr-200l, Dr-210l, Dr-320b, Zx-517c, Zx-517a, ... ..

It is math error. See user manual page 331 Appendix 1 for help. Appendix 1. Error Message Table - Casio fx-9750GII User Manual [Page 331] ' ManualsLib Also on Casio website. Errors (casio.com)

If your Casio fx-991EX calculator is displaying [Dec], it means it's in Decimal mode. To switch back to normal calculations, press the MODE button and select the desired mode, such as COMP for computation or MATH for mathematical functions. I think this will solve your problem

The NEWYES NY-991MS and CTIFREE fx-991ES PLUS calculators do not have a dedicated "FACT" button like the Casio FX-83GTX. However, you can still find prime numbers on these calculators.To find prime numbers:NEWYES NY-991MS:Press the "MODE" button.Choose "PRIME" from the list of options.Enter the desired number and press "=" to check if it's prime.CTIFREE fx-991ES PLUS:Press the "MODE" button.Select "TABLE" or "TABLESET."Input a starting point and an ending point, then observe the table for prime numbers.Although the techniques may vary from those used on the Casio FX-83GTX, they prove to be effective for prime number calculations on the designated calculators.