20 Most Recent Casio Scientific Calculator Fx-82es Plus - Page 7 Questions & Answers

You should try SHIFT AC (Off).

Just as you do it by hand. To input X press Alpha key then ). The question I ask is what do you want to do? The = sign is a problem. If you do not have a second = sign (Shift =) then the calculator cannot handle the problem you want to solve.

Press the S-D button to switch between fractions and decimals.

http://www.mas.ncl.ac.uk/~ndah6/teaching/MAS1403/tutorial3.pdf http://www.mas.ncl.ac.uk/~ndah6/teaching/MAS1403/tutorial3.pdf

I've hunted and hunted for you but it looks like a "Repair Center" item? Start here: https://www.casio.com/support/authorized-service Authorized Service and Support-Service Centers Primary Warranty Authorized Service Centers (U.S.A.) For Musical Instruments (Models AL, AP, PX, WK only), please go here.

East Coast Service Location

Casio Factory Service Center(Opens the Casio Factory Service Center website in new window)(Opens the website in new window)

West Coast Service Location

The Time Machine 2335 Honolulu Avenue Suite B Montrose, CA 91020 Phone: 818-249-6007 Fax: 818-249-9412

First solve the problem by hand. Once you understand the solution it would be easier for you to implement it.

When it is time for you to put an expression in absolute value, press the OPTN key, then F5/Num, then F1/Abs. Open parenthesis, input expression, then close parenthesis. For fractions, use the key with the symbol a b/c. A little friendly advice, please do invest some of your time reading the manual. Most Casio graphing calculators work the same way. What you learn on one, works on another.

With a number displayed, pressing the M+ key adds the displayed number to the contents of the running memory, and stores the result. Pressing the M- key subtracts the displayed number from the memory and stores the result in the running memory.

Choose the computational mode as Standard Deviation or Statistics, Enter your values and press the keys x_bar or other to get the measures you are looking for.

Enter the number in the correct units (degrees or radians) press the key for the function you want and get the result.

Any chance the ribbon is installed upside down?

I have searched casio and various old manual sites and at this point have found the following manual to be as close to what you are looking for among a multitude of variations. It is not a problem to find a manual to a FX-82C or FX-82AU but the A variation has eluded me: http://casio.edu.monacocorp.co.nz/products/fx82ausplus/pdf/Using_2082AU_20PLUS_20manual.pdf Notice that this comes from a New Zealand site. It makes me wonder if AU might relate to Australia. Only Casio support would know for sure.

Here is a user guide that should prove beneficial. I hope it helps. http://support.casio.com/en/manual/004/fx-300ES_PLUS_EN.pdf