How to save equations in Casio fx-991 ES+ calculator, so …

  • Calculator Technique #1 . You can easily store values in your calculator using any of these 9 available variables: A, B, C, D, E, F, M, X, and Y.

    Procedure:



    1. After entering or obtaining the value that you need, press shift.

    2. Press RCL (the word STO above means Store).

    3. Then, choose a button that contains a letter (variable) on its upper right.

    In this case, it will equate the value to A.

    How To Use The Stored Value:



    1. Press
    ALPHA.

    2. Click the button that contains the letter that you have u


    Thanks..

    You cannot have equations (or formulas) stored in this calculator (fx-991ES PLUS), with the power turned off.

    You can save a single formula, and use it to calculate results with different variables, using the [CALC] key, as long as the power remains turned on. If you press the ON button, the formula is lost. Please read the manual that came with the calculator. It will help you a lot.

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    I know it is not the exact answer you want, but it may help someone:

    You can go to ‘EQN mode’ in the calculator and write an equations or equation in the ‘Unknowns’ or ‘Degree’s mode. Then even if you switch of the calculator, the equation will be saved. But yes it will be erased if you will change the mode to something else.

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    All non-programmable and non-graphics CASIOs can not store equations for later recall. If you change the MODE or switch off your unit or simple press ON button, all the input field information and calculation history memory lost.

    Change to eg. a TI-36X Pro or 30X Pro, these units are supports same functions like CASIO-fx-991 series (including Classwiz) and no need to change MODEs if you want to use vectors/matrices/complex numbers etc…, and the stored equation don’t cleared when you turn off the unit.

    Or change to a HP 35s or 32SII (or 33s). On these scientific/programmable units you have possibility to store lots of equations depends on free memory.

    Casio scientific calculators cannot save equations in memory. Only numerical answers can be saved in their memory registers.

    Only some models of Sharp scientific calculators such as the Sharp EL-506R, EL-506V, EL-506W, EL-506X, and the Canon F-788dx are able to save equations in memory.

    All my best to you.

    /Promoting Scientific Calculators for the Benefit of Mankind

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    You cannot save the equation. Once you turn the calculator off, equation is gone.

    But, nevertheless, go through the video to understand how to program your calculator to get values of a function.

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    After calculating your equation

    say for example,

    3*6 and then press ‘=’ symbol.

    Now you can switch off the casio. To the answer again switch it on and then press the ANS button and press the ‘=’ symbol, you’ll be able to see the answer again.

    That’s all i know.

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    you can use the memory option which looks like (sto) and to access that you need to first press the shift button and then press the (rcl) button which stand for recall.

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    I guess the equations stay even after you switch it off. If the ready made equation function is what you’re talking about.

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    Casio scientific calculators (all Casio non-graphers) cannot save equations in memory. Only numerical answers can be saved in their memory registers.

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    Press Shift+Mode you can find this

    MCL (press 1) Mode(press 2) All(press3)

    To clear memory: Press 1 it shows Mem clear now press = to clear memory

    To clear mode: Press 2 it shows Mode clear now press = to clear mode

    To clear all: Press 3 it shows Reset all now press == to reset all

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