Casio fx-82EX Installation and operation manual

Fx-82EX Booklet

Fx-82EX Overview
Main keys:
1. ON: Turns on the calculator W
2. Menu : Calculator main page w
3. Shift : Activates all yellow functions q
4. Alpha : Activate all Red functions Q
5. AC : Clear screen C
6. DEL: Delete terms separately o
7. Option: Transfer to more detailed calculation options T
To turn off calculator: qC
To reset calculator: q93=C
In Calculate we can do operations, prime factorization, simplifying
fractions, absolute value,Factorial, logarithm and exponents
In statistics we can find all analyses on one screen
Table is used to input function and analyze data
with one or two function input
Main menu screen

Sample Questions using fx-82EX
1) Order of operation
2) Rounding
Log into calculate w1
Setup calculator for rounding to nearest hundredths
qw31
Example:
Round to nearest hundredths 6.2897
Follow the steps using fx-82EX
6.2897=
To log into calculate:
An empty screen will appear
Example 1:
    
Follow steps for input:
Example 2:
󰇛  󰇜 
Follow steps for input:
w1
3+2p8^2=
(4p8)^2$+7=

3) Statistics
In order to solve statistics log into statistics from main menu w2 and choose the type of your
Statistics. In this session we will solve 1 variable statistics and 2 Variable (linear equation)
Example 1:
Rami got the following grades in Mathematics:
30, 32, 35, 34, 36, 40, 32, 33, 36, 41, 44, 37,
Calculate the mean. Calculate the standard deviation
Steps using Calculator fx-82EX:
1st log into Statistics w2
2nd Choose 1- Variable 1
3rd fill up the table
30=32=35=34=36=40=32=33=36=4
1=44=37=C
4th click option key T2 for calculation.
A screen will show all calculations scroll down by arrow to see more result
4) Table
In order to use table using fx-82EX log into main menu screen and choose Table w3
Example 1 : Check whether the function 󰇛󰇜   is decreasing or increasing over the domain
󰇛󰇜.
Steps using calculator: Make sure the calculator is loged in to Table
Q)d+3==1=5==
The table will show the result, now look at the f(x)
Values are they increasing or decreasing?
To evaluate the function at any given “x”value, move the marked black space by arrow
downword or upword in “x” column and replace it by any “x” value
Example 2 : change the 1st “x” value by 15
Steps :
15=

Example 3 : what is the intersection between the two given functions
󰇛󰇜    󰇛󰇜         
Steps using calculator: make sure to be in the table mode w8
Q)d+4Q)+4=3Q)+6=p4=4==
In order to locate the intersection point just check the table where 󰇛󰇜 󰇛󰇜
So the intersection point is (2,0)
Example 4: For what values of  󰇛󰇜        
Steps using calculator: make sure table mode is activated w8
Q)qd==p3=3==
Check the negative values of f(x) from the table with respect to “x”
Domain where f(x) is negative : 󰇟󰇜