Question about Casio FX-115ES Scientific Calculator

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How to enter variables

I have a casio fx-115ES and i have some problems that require variables.. example.. 2x3(cubed)-686.

how do i enter this into my calculator to solve?

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  • Casio Master
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Hello,

When you press the key between X^2 and log it gives you a template where you enter the base of the power (bigger rectangle) and the exponent (the smaller raised rectangle) . Using the 3 cubed exemple is not good because base and exponent are the same.

Exemple :15 cubed.
Press the key with an X with a small raised rectangle. The cursor blinks at the left side of the raised rectangle. Enter the exponent (3). Then use the left arrow to move the cursor to the base. Enter 15 and press [=]. The result is displayed as 3375 or in some other equivalent form (with a power of ten.)
Hope it helps.

Posted on Oct 03, 2009

  • k24674 Dec 06, 2009

    With variables:
    In what follows physical keys are represented inside square brackets [ ] while the SHIFTed or ALPHA keys are inside parentheses. Exemple [ ) ] is a left parenthesis and [ALPHA][ ) ] displays X; [X^2] calculates the square of a number, while [SHIFT][X^2] calculates the cube.

    2[ * ][APLHA] [)] (X) [SHIFT][X^2] (X^3) -686


  • k24674 Dec 06, 2009

    OOPs [ ) ] is a right parenthesis.

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4aa123f.jpg
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18c49ac.jpg
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LBrown18062@hotmail.com My manual is 75 pages. I can email it to you. Please put Casio FX-115ES as the subject. Awaiting your response.

fx-115ES User's Guide
About this Manual
• The MATH mark indicates an example that uses Math format,
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• Keycap markings indicate what a key inputs or what function it
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• The following shows an example of how an alternate function
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