Question about Casio DR-210HT Scientific Calculator

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Casi DR-210HT Calculator

Cannot get the equal sign to work.

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SOURCE: i cannot find where the greater than, smaller

On Casio calculators, inequality grap?ing has always been part of the OS. To perform inequality graphs, press the graph icon.
Press the F3 key to open the TYPE tab at the bottom of screen.
Use the F6 key to access other choices.The relational operators are then displayed and you can select the one you want to create the inequality function.

The casio manual is rather comprehensive and I am surprised that you could not find an answer to your questions. Did you leaf through it?

Posted on Dec 07, 2010

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SOURCE: How do I type an equal sign into the calculator?

Look at the top left corner of the keypad. If you have a = sign marked on the f ace of the calculator (near a CALc or Solve key) you can enter the = by pressing [ALPHA] then the key next to which there is an = sign.
If you do not have that second = sign, you cannot enter it.
The FX-115ES and the FX-991ES do have that sign to allow the user to enter equations. In your calculator you only have three calculational modes: the general COMP mode, the STAT mode and the Table Mode. No equation mode. Sorry.

Posted on Aug 30, 2011

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If you do not have that second = sign, you cannot enter it.
The FX-115ES and the FX-991ES do have that sign to allow the user to enter equations. In your calculator you only have three calculational modes: the general COMP mode, the STAT mode and the Table Mode. No equation mode. Sorry.

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Here is an example;

If I wanted to know what the sum (or total) was for 2 + 10+ 16 - I would enter the number 2 and then the plus sign + and then the number ten and the plus sign + and then the number sixteen and the plus sign again + and then press the equals sign which looks like this =. when I press the equals sign = the calculator gives me the answer to my question of what the total of those numbers are.

I hope this helps?

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On these units, the "equals" sign ([=]) is located in the [TEST] menu. This menu is a [2nd] function of the [MATH] key.

This function is used to test if two expressions are equals. To evaluate an expression, simply hit [ENTER].

Good luck.

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Hi,
You are running the application called Inequalz. You must uninstall it (NOT DELETE) to return to the normal calculator configuration.
Press [APPS]. Scroll down to find Inequalz. Highlight its number in the list and press {ENTER]. You will see a screen Inequal Running and
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  3. 3:About.
Press [2:Quit ..]
Your calculator will unload it out of memory.

Hope it helps.

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