Question about Casio DR-210HT Scientific Calculator
Cannot get the equal sign to work.
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
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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