Casio Office Equipment & Supplies - Page 6 - Recent Questions, Troubleshooting & Support

It is a known issue, time for a new one $36.00 on Amazon. https://www.google.com/search?q=Casio+fx-991ES+Plus+display+fading ..

The Casio fx-991ES calculator cannot perform 7x7 matrix operations.

generic error to all E10 -means that the paper roll has run out or that the printer mechanism has not been closed properly.

Casio SE-S10 user manual - Total POS

I have a Casino MS-80S and yea, the percentage works different. As example to take 100 and subtract 10%, this is what I do: 100 X 10% - and then I get the answer 90 after I press the minus key. To add the percentage instead, 100 X 10% + will give me an answer of 110, after I press the plus key.

Put the roll in and feed the loose end up and actually all you need to do is put it between the two pieces of the hinge top. it is a thermal printer so it does not need to be fed like a regular calculator...it took me a few tries before I figured it out.

Press the Shift/Mode key and set the Input/Output to MathIO. Even that will not guarantee that the display will be in root form. Only square roots are possible.

Press [SHIFT][DEL] (INS) to toggle between INS and Overwrite. The cursor will change from a horizontal line to a vertical one.

https://support.casio.com/en/support/answer.php?cid=004004001006&qid=103&num=1 The "E" stands for "Error". This problem can usually be resolved by resetting your calculator. https://sharpcalculators.com/support/troubleshooting/16-troubleshooting/39-what-does-the-e-on-my-display-mean-2

https://www.youtube.com/watch?v=C2R2XAMlqrc https://www.youtube.com/watch?v=vVKvYLeGipE

No spare parts

I dont believe there is a grand total on that machine. http://support.casio.com/en/manual/manualfile.php?cid=004005001

See images below

why cant they include infinity symbol ? sometimes i feel my calculator is so dumb !

dear kladofora thire is no 4:BASE-N in the mode please i need help Gist

https://www.calculatorsoup.com/calculators/conversions/convert-decimal-degrees-to-degrees-minutes-seconds.php

Parts not available, Try buying a used one on ebay

Hello,
If by calculus problem you mean derivatives of functions, integrals, extrema and such things, I am sorry to inform you that neither the Casio FX-300MS, nor the FX-991MS can handle them. The newer Casio calculator FX-991ES is capable of performing numerical differentiations and integrations. There also graphing calculators by Casio FX-9750G, FX-9860G as well as by Texas Instruments (TI 83 PLUS/TI84PLUS) that are reasonably performant in that area.

Hope it helps.

Your calculator is in Table Mode.
Change the mode to Computational: Press MODE, select 1: COMP.

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?????

Hello,
Here is a link to Casio New Zealand. Enter the model number for your calculator (with and wihout the hyphen, I don't remember which) and download a bilingual manual. The quality of the copy is to say the least ... Well, why not let you discover it for yourself.

Bye.