Unraveling the Mystery of "x^{\blacksquare}" on a Casio fx-82MS

[mcastillo356]

TL;DR

I have no clue about a LaTeX symbol at a Spanish thread.

Hi, PF

The scientific calculator I have is a Casio fx-82MS. At the keyboard, the $\fbox {^}$ button is the one provided to calculate powers.

My doubt is not my calculator: is a sentence at a native thread: "$x^{\blacksquare}$ es la función" (the function is $x^{\blacksquare}$). The question: What function, which key, and how does it work?.

I don't manage in my own language

 

[DaveC426913]

All I see is "x to the power of ... black square".

Why don't you just direct us to the thread?

 

[mcastillo356]

Hi, Dave, PF, thanks in advance.

https://foro.rinconmatematico.com/index.php?topic=117541.0

 

[jedishrfu]

Sadly, I think youll have ask the poster directly. It could be almost anything although its likely x to the n or for a calculator x to the y or something similar.

 

[Baluncore]

The question: What function, which key, and how does it work?

The evaluation of; z = x^y; z = x^y; is done via the logarithm and antilogarithm functions.
Z = Alog( Log( x ) * y ); The natural log is ln( x ); The natural antilog is e^( x ) .

 

[mcastillo356]

Thank you, PF, once more!

 

[Baluncore]

There are too many different versions of the Fx-82MS.
Download a 49 page teaching version of the “Casio Fx-82MS Manual” from here.
https://www.manualslib.com/download/1112279/Casio-Fx-82ms.html
Powers ^, and roots √, are covered on pages 11 to 16.

 

[mcastillo356]

It works! Good advice at #5.
Thanks, Baluncore. I've linked at #7. It's fantastic.
!