Question about Casio FX-9860G Graphic Calculator

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Installed a wrong OS update version

I installed the OS update for fx-9860G(slim) when my calculator was actually just the fx-9860G (NOT SLIM). this caused my screen display to turn upside down and the functions of my calculator's buttons to be entirely messed up. anyone knows how to solve this??

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  • Anonymous Mar 24, 2014

    need driver plz



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Get battery out-and install it again(after you return the battery)

Posted on Jul 07, 2008


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I am sorry to disappoint you but the Casio FX-986G does not handle the calculations of the eigenvalues and eigenvectors of matrices. Maybe the newer OS versions can do that.
The Graph 100+ sold in Europe (I forgot the equivalent model in North America, maybe the FX9860GII Plus) can find eigenvalues and eigenvectors. Here is how it does it. See screen capture below. Compare with your calculator to see if you have the EigVl( and EigVc( commands in the catalog.


Jan 23, 2014 | Casio FX-9860G Graphic Calculator

1 Answer

Can you calculate indefinite integrals on the casio fx-9860G

Unfortunately, the Casio FX-9860 G does not have a Computer Algebra System or CAS. For this reason it can only calculate definte integral over a given interval. The lower and upper limits must be supplied. The result will be a number.
Casio calculators that have a CAS are the Casio ClassPad CP330/ 300Plus/ 330, or the Algebra FX 2.0.

Feb 08, 2012 | Casio FX-9860G Graphic Calculator

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Prime factorization using Casio FX-9860G Graphic Calculator

There is a program called Prime Factor Analysis on this site. It is written for the FX-9750GPlus calculator but I suspect you should be able to use it on the FX-9860G. To access the site you must have an account. You can register and it is free.

Jul 30, 2011 | Casio FX-9860G Graphic Calculator

1 Answer

How can you change the mode on a casio fx-9860g calculator to deg. mode?

Press SHIFT MENU to bring up the setup screen. Use the arrow keys to move to the "Angle" line and press the function key for the desired angle mode.

Mar 04, 2011 | Casio FX-9860G Slim Graphic Calculator

1 Answer

Lost the instruction manual. dont remember how to use it

You can download the manual from the manufacturer's web site at

Jan 29, 2011 | Casio FX-9860G Slim Graphic Calculator

1 Answer

How do i solve negative 15x to the power of 4 divided by 3x

-15x^4 / 3x = -5x³ for x 0.

You should be able to figure this out without having to resort to a calculator. Note the "for x 0"... the two functions are identical everywhere, except the -15x^4 / 3x version is undefined for x = 0 (3 times 0 is 0 and you cannot divide by 0). The function has a "hole" at this point. -5x³ does not suffer from this defect, for x=0 it simply evaluates to 0, so you have to mention this fact to make it proper.

Jan 07, 2011 | Casio FX-9860G Slim Graphic Calculator

1 Answer

I have the Casio FX-9860G Slim, how do i do logs with something other then base 10?

Use the logab function in the catalog. For example, to calculate log base 2 of 32:
OPTN F4 F6 F4 2 , 3 2 ) EXE

Dec 15, 2010 | Casio FX-9860G Graphic Calculator

2 Answers

Have lost instructions for my calculator fx 9860 where can i get them from

find it in the web search casio or type the medel of the calculator and search... just try...

Jan 14, 2010 | Casio FX-9860G Slim Graphic Calculator

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How do i solve factorial problems

I have a fx-980g slim.
I might be the same way to do this.
Hit OPTN, then hit F6 or the corresponding button for > arrow button on the screen, hit PROB,
on the left is x!

Good luck!

Nov 13, 2008 | Casio FX-9860G Graphic Calculator

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