Casio FX-991ES Support Question
Casio FX-991ES Support Question
Find answers below for this question about Casio FX-991ES.Need a Casio FX-991ES manual? We have 2 online manuals for this item!
Question posted by medoagbaga on August 29th, 2014
How To Use Fx-991es Plus For Mean Median And Mode
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Related Casio FX-991ES Manual Pages
User Guide - Page 3
...marking text is represented in green brackets)
It means this:
Press 1 and then the key ...Mode to input the applicable variable, constant, or symbol.
Press S and then the key to access the function. Example: 1s(sin-1)1=
Indicates the function that uses Math format,
while the LINE mark indicates Linear format. The alternate function is not part of the alternate function key text mean...
User Guide - Page 4
...)=(Yes)
• For information about calculation modes and setup settings, see "Calculation Modes and Calculator Setup".
• For information about memory, see the symbol Appendix in this manual, it . shall not be liable to anyone for the angle unit.
Moreover, CASIO Computer Co., Ltd.
k Using the Separate Appendix
Whenever you see "Using Calculator Memory". Rad : Specify Radian for...
User Guide - Page 7
...• You can also adjust contrast using the calculator, slide its hard case downwards to remove it probably means that battery power is on the calculator. • Press 1A(OFF) to...Use d and e to turn on the display. E-5 k Turning Power On and Off
• Press O to turn off the calculator.
Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode...
User Guide - Page 8
... be replayed, or there is a value stored in the VECTOR Mode. The calculator is in the MATRIX Mode. Example:
Input expression
{ Calculation result
k Display Indicators
Sample Display:
CMPLX
This indicator:
S
A
M
STO
RCL
STAT CMPLX
MAT VCT
7 8 9 FIX SCI Math
$`
Disp
Means this:
The keypad has been shifted by pressing the S key. The keypad will unshift...
User Guide - Page 9
...(SETUP) displays the setup menu, which you can jump between using c and f. The setup menu has two screens, which you can use to execute, the display may show only the above indicators (without any value) while it performs the calculation internally. c
f
E-7 Calculation Modes and Calculator Setup
k Calculation Modes
When you want to perform this type of operation: General...
User Guide - Page 11
... STAT Mode STAT ...
Polar Coordinates
1Nc3(CMPLX)2(r∠θ)
Specifying the Statistical Display Format
Use the following procedure to turn display of the frequency (FREQ) column... Norm2) determines the range in which results will be displayed in nonexponential format.
The decimal point for calculation results
.
Norm1: 10-2 > x, x > 1010 Norm2: 10-9 > &#...
User Guide - Page 12
... Mode Input/Output Format Angle Unit Display Digits Fraction Display Format Complex Number Format Statistical Display Decimal Point
Is initialized to input the argument and the closing parenthesis ()). Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator lets you input calculation expressions just as shown below , it .The calculator...
User Guide - Page 15
... so it becomes
369 × 12 LINE Insert Mode:
369**12
dd
Y Overwrite Mode:
369**12
ddd
Y
Correcting a Calculation Example: To correct cos(60) so it becomes sin(60) LINE Insert Mode:
c60)
dddY
s Overwrite Mode:
c60)
dddd
s Inserting Input into a Calculation Always use the insert mode for this operation. Use d or e to move the cursor to the location...
User Guide - Page 16
... necessary corrections. You can also exit the error screen by mistake instead of 14 ÷ 10 × 2 = Use the insert mode for the following operation.
Further input will become impossible if the height of the calculation you are inputting exceeds the allowable limit.
• Nesting of functions and parentheses is allowed. This will...
User Guide - Page 20
... to two terms
(an integer term is always used for display of trigonometric calculation results. Trigonometric function calculations
c. Results that include square root symbols can be displayed in the CMPLX Mode, the following are the calculations for which ' form is also counted as a term). ' form calculation results use display formats like those shown
below.
± a'b , ±...
User Guide - Page 22
... be displayed as a root (') form or a fraction, the calculation result is displayed in the COMP Mode (N1).
E-20
For more information, see "Calculation Priority Sequence". Example: log3 + '2 = 1.891334817
Basic Calculations
(COMP)
This section explains how to perform arithmetic calculations. k Arithmetic Calculations
Use the +, -, *, and / keys to perform arithmetic, fraction...
User Guide - Page 26
... you input and execute, and its result. Using Calculation History Memory and Replay
Calculation history memory maintains a record of each calculation expression you are performing causes calculation history memory to become full, the oldest calculation is deleted automatically to make room for the previous calculation.
Modes that calculation history memory contents are cleared whenever you...
User Guide - Page 27
... memory. E-25 Independent Memory
Calculation results can use memory. This section uses the COMP Mode (N1) to 15 digits.
• Answer Memory contents are not change if an error occurs during the current calculation.
• Answer Memory contents are maintained even if you change the calculation mode, or turn off the calculator.
• If a CMPLX Mode calculation produces a complex number...
User Guide - Page 28
... value or result of the expression to independent memory
Subtract the displayed value or result of the different operations you press the A key, change the calculation mode, or turn off the calculator. Inputting Answer Memory Contents into a calculation, which tells the calculator to use the current independent memory contents at that location.
User Guide - Page 29
... variable A ty(A)
• The following procedure when you press the A key, change the calculation mode, or turn off the calculator.
E-27 To clear the contents of the variables. k Clearing the Contents of All Memories
Use the following procedure to clear. Calculation Examples Using Independent Memory
• If the "M" indicator is on the display, perform the procedure...
User Guide - Page 34
... key operations and the values this calculator uses for BASE-N. Before performing a calculation, be sure to specify the default angle unit you want to display calculation results. Function Calculations
This section explains how to you depends on the calculation mode you are in. Before performing an operation, be used in all calculation modes. Appendix sin 30 = 0.5, sin-10.5 = 30...
User Guide - Page 61
... on the display, you can press an
arithmetic operator key (like + or -) and use the screen contents in Examples and (MatA, MatB, MatC). MatA × MatB (Multiplying
Two Matrices) 3 × MatA (Matrix Scalar Multiplication) Obtain the determinant of Calculations". • You cannot edit the contents of a cell. • To switch to the...
User Guide - Page 67
.... • Conversion formula data is based on ISO Standards (1992) and CODATA Recommended Values (1998). You can use the metric conversion commands in any calculation mode except for a list of all of these examples in the COMP Mode (N1). To recall a metric conversion command, press 18(CONV). Functions preceded by values, powers, power roots...
User Guide - Page 68
... Asin(30), etc.) 9.
Prefix symbol: (-) (negative sign) d, h, b, o (base n symbol)
5. Dot product: • (Dot) 8. Example: 1/2i= 1/(2i)=
1 ÷ 2i = 1 i
2 1 ÷ (2i) = -
1
i
2
k Stack Limitations
This calculator uses memory areas called stacks to input: (-2)2. Fractions: ab/c
4. Addition and subtraction: +, - 10. If you want to square the value -2, for example, you may...
User Guide - Page 69
This means that involves a matrix causes one level of the matrix stack. • The VECTOR Mode uses its own matrix stack, which is a real number or a complex number.
Errors are performing causes the capacity of either stack to be exceeded.
Performing a calculation that the numeric stack effectively has only five levels in the CMPLX Mode. •...
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