Casio fx-991EX Classwiz Tips: Tables and Graphs

Casio fx-991EX Classwiz Tips:  Tables and Graphs

This week I am going to show some things that can be done with the Casio fx-991EX Classwiz.  

Believe it or not, the Classwiz can produce graphs of functions.   But not in the way we are used to.  

Generating Tables and Graphs

To generate a table, press [ MENU ], 9: Table.  The Classwiz will always ask for two functions f(x) and g(x).  The function g(x) can be left blank.

You are asked for:

Start:  minimum x value

End:  maximum x value

Step:  change of x

number of steps =  ceiling((End - Start) / Step)

The maximum number of steps for f(x) alone is 45, it gets reduced to 30 if both f(x) and g(x) are used. 

The table of values are displayed.

While the table is displayed, you can generate a graph by pressing [SHIFT] (QR).  This has the Classwiz generating a QR code.  You will need a QR reader, which you can use the Casio EDU app to read the code.

Once the QR code fits into the camera, you are given a link.  Below are examples of graphs:

I hope this week has been helpful in highlighting some of the features of the Casio Classwiz.   For the students in school, I wish you a happy and successful school year.

The next blog post will be on September 15, 2022.   Also, I am going to talk about HHC 2022 in Nashville.  

Eddie

All original content copyright, © 2011-2022.  Edward Shore.   Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited.  This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author. 

Lists in Numworks - Version 19.2

Lists in Numworks - Version 19.2

Introduction

In Version 19,  lists were added as an object in the Numworks calculator.  We can define and name lists with any values that we want. Lists are designated by the brackets { }. 

*   The values can be real number, complex numbers, numbers with units, scientific constants, and combinations of those types.   What is not allowed in lists are strings and matrices.

*  The indexing of lists starts with 1.   We can call a list's elements by the parenthesis after the list name.  For example,  xlist(10) recalls the 10th element of the list xlist.

*  { f(k) }_k≤value generates a list of f(k) from k=1 to value, step 1.   The variable can be almost any variable you want, except e and i.  e is designated as the exponential constant (about 2.71828...) and i is designated as the imaginary number √-1.   The limits are strictly from 1 to value.

*  Once a user defined list is created, the individual values cannot be changed.   Furthermore, there are no augment or delete commands.  In this sense, user defined lists acts like tuples in Python.

*  Lists can be recalled in the Statistics and Regression apps.   The system named lists V#, X#, and Y# are updated accordingly.

* Defining a list of random values will always change the randomized values every time a user defined list is recalled.  

Please note that this is for Version 19.2.  

Screenshots are captured using the Numworks Emulator on July 10, 2022:  www.numworks.com/emulator

Note:  Casio fx-991EX Week - September 5, 2022 to September 9, 2022 

Eddie

All original content copyright, © 2011-2022.  Edward Shore.   Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited.  This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.