Where is the comma on the casio fx-992s - Office Equipment & Supplies

Rec? Conversion from polar to rectangular coordinates ? You need and a radius (length) and an angle (Rec (r, theta)). Make sure the angle unit is the one you want: degrees or radians.

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

I am sorry but the image does not show any Degree button.
To set the angle unit you have to press the Mode button twice before you arrive at the angle unit configuration. See the screen capture below.

I am sorry but the image does not show any Degree button.
To set the angle unit you have to press the Mode button twice before you arrive at the angle unit configuration. See the screen capture below.

I do not think that Casio scientific calculators have the possibility to separate thousands, millions etc. The Sharp have that feature.

The Casio Fx300ES does not provide comma or other separation/ spacing symbol to separate thousands.

its simple
press mode
3;stat
2;A+Bx
l x l y l
l 2 l 4.6 l
l 4 l 5.9 l
press; AC
press;5.9
press; shift
press;1
press;7 (reg)
press;5 (comma)
press;=
u will get ans

Yes,it's possible to program the Fx-82es to separate the digits with the help of comma.
PLEASE FOLLOW THE INSTRUCTION CAREFULLY.
If you make a mistake then please turn the calculator off and start over again.
====
Turn the calculator on.
GO TO Display setup screen
Disp 1
You will has two options
1 for DOT (that's not what you want)
2 for Comma (please press 2 and enter/triangle pointing to the right)
Please let me know are you able to get to setup mode and make the comma change on reply.

Decimal Point and Separator Symbols
You can use the display setup (Disp) screen to specify the symbols you want for the decimal point and 3-digit separator.
• To change the decimal point and separator symbol setting, press the MODE key a number of times until you reach the setup screen shown below.
Display the selection screen. (Disp) 1.
Press the number key ( 1 or 2) that corresponds to the setting you want to use.
1(Dot): Period decimal point, comma separator
2(Comma): Comma decimal point, period separator

If you want to get an answer like 1/2X for d/dx(X^2), you will have to purchase a CAS calculator like Casio's Algebra FX-2 or Classpad. TI series calculators also have CAS.
However, you can calculate the numerical values of derivatives and integrals only.
To calculate the value of a proper integral:

1. Press the 'ON' key;
2. Press the Integral key ;
3. Enter your expression (example X^2+X-3 etc);
4. Press the 'comma' key after your expression;
5. Input the first limit after comma, input comma again after first limit;
6. Close brackets;
7. Press the equals key, display may return after a while with the answer.

for eg to calculate ∫xdx from 0 to 2, input as follows:

∫dx(X,0,2)

To calculate derivative at a point:

1. Press Shift and then the integration key.
2. Enter your function;
3. Input comma;
4. input the point at which you want to evaluate the derivative;
5. Close bracket and press enter.

Example, to calculate d/dx X^2 at 3 input:

SHIFT+∫dx key X^2,3)

Display looks like this: d/dx(X^2,3).