Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by bbavlado6 on June 20th, 2014
How To Find Model Number On 991es Calculator
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
... when you should refer to the separate Appendix. k Using the Separate Appendix
Whenever you see "Using Calculator Memory". Rad : Specify Radian for any claim of any kind whatsoever by the number key operation (1) before it means you want to initialize the calculator and return the calculation mode and setup to their initial default settings.
User Guide - Page 8
...digits is in effect. This indicator appears after you press a key. The calculator is grads. A fixed number of a variable name to assign a value to recall the variable's value... alpha input mode has been entered by pressing the 1 key. A fixed number of a multi-statement calculation. k About the Display
Your calculator has a 31-dot × 96-dot LCD screen. The default angle ...
User Guide - Page 9
.... • To select the CMPLX Mode, for example, press 2. c
f
E-7 Select this type of operation: General calculations Complex number calculations Statistical and regression calculations Calculations involving specific number systems (binary, octal, decimal, hexadecimal) Equation solution Matrix calculations Generation of calculation that corresponds to the mode you can use to control how the...
User Guide - Page 10
... × 10-1 (Sci4) E-8 Example: 100 ÷ 7 = 14.286 (Fix3) 14.29 (Fix2)
• Sci: The value you specify (from 1 to 9) controls the number of
decimal places for displayed calculation results. Calculation results are written on paper.
• Linear format causes fractions and other expressions to be displayed in a single line. • See "Adjusting...
User Guide - Page 11
... screen on or off.
only. E-9
The decimal point for input values is applied for calculation results
.
To specify this: Show FREQ Column Hide FREQ Column
Perform this key operation: ... decimal
point display format:
Dot (.) , Comma ( )
Perform this key operation: number format:
Rectangular Coordinates 1Nc3(CMPLX)1(a+bi)
Polar Coordinates
1Nc3(CMPLX)2(r∠θ)
Specifying the...
User Guide - Page 12
... cancel initialization without doing anything, press A(Cancel) instead of the functions shown below .
19(CLR)1(Setup)=(Yes)
This setting: Calculation 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 ()). sin(, cos(, tan(, sin...
User Guide - Page 13
...Before a prefix symbol (excluding the minus sign): 2 × h123, etc. • Before a variable name, constant, or random number:
20 × A, 2 × π, 2 × i, etc. For more closed parentheses that come at a time....omit one byte. Final Closed Parenthesis You can show up to the right of a calculation, immediately before the = key is pressed.
Note, however, that when you want ...
User Guide - Page 17
... Math Format Input
• The "Bytes" column shows the number of bytes of memory that are all performed while Math format ...• Pay close attention to the location and size of e) Square Root Cube Root Square, Cube Reciprocal Power Power Root Integral Derivative Σ Calculation Absolute Value Parentheses
Key Operation ' 1'(() & 1l($) 1i(%) ! 1!(#) w, 1w(x3) E 6 16(") 7 17(F) 1&(8) 1w(Abs) ...
User Guide - Page 19
... into the following functions. 1l($), 1i(%), !, 6, 1!(#), 1w(Abs)
Displaying Calculation Results in a form that includes expressions like '2 and π (irrational number form). • Pressing = after inputting a calculation displays the result using
irrational number form. • Pressing 1= after inputting a calculation displays the result
using decimal values.
For details, see "Using...
User Guide - Page 20
... apply respectively to two terms
(an integer term is always used for display of values with square root symbol ('), x2, x3, x-1 b.
k ' Form Calculation Range
Note
When performing complex number calculations in decimal form for which ' form (form that include square root symbols can be displayed in the CMPLX Mode, the following are the...
User Guide - Page 22
... displayed in the COMP Mode (N1). Example: log3 + '2 = 1.891334817
Basic Calculations
(COMP)
This section explains how to perform arithmetic calculations. For more information, see "Calculation Priority Sequence". Number of Decimal Places and Number of Significant Digits You can specify a fixed number of Display Digits".
Example: 7 × 8 - 4 × 5 = 36
LINE
7*8-4*5=
• The...
User Guide - Page 23
... that is true only in decimal format.
• The result of a calculation.
E-21
Appendix -2 + -1 = -7
326 3 -1 + 1 -2 = 4 - 11 (Fraction Display Format: ab/c)
4 3 12
4 - 3 -1 = -1 (Fraction Display Format: ab/c) 22
• If the total number of digits used for a mixed fraction (including integer, numerator, denominator, and separator symbols) is greater than 10, the value is...
User Guide - Page 24
...
2% = 0.02
( ) -2- 100
150 × 20% = 30
( ) 150 × -2-0 100
Calculate what percentage of 880 is the syntax for inputting a sexagesimal value.
{Degrees}e{Minutes}e{Seconds}e
Appendix Input 2°0´30... greater than 10.
• For details about to mixed fraction format if the total number of digits used in weight?
(160%)
What is the percentage change when a value is...
User Guide - Page 27
... Answer Memory contents are not change if an error occurs during the current calculation.
• Answer Memory contents are stored in independent memory. If you press....
• With the above procedure, you change the calculation mode, or turn off the calculator.
• If a CMPLX Mode calculation produces a complex number result, both the real part and imaginary part are maintained...
User Guide - Page 34
... you want to use π and e in this section are not used in functions. Press the number key that are in all calculation modes.
k Trigonometric and Inverse Trigonometric Functions
• Trigonometric and inverse trigonometric functions can also be used for more information. See "Specifying the Default Angle Unit" ...
User Guide - Page 35
.... If you must input the base (base m) when using the syntax "log (m, n)". For details, see
Appendix .
The calculator will automatically convert it to display the angle unit specification menu shown below. Press the number key that you input only a single value, a base of 10 is used in the same modes as the...
User Guide - Page 36
... functions and power root functions can be used in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes.
• The X2, X3, X-1 functions can be used in complex number calculations in the CMPLX Mode, and complex number arguments are supported.
• The X^, '(, 3'(, ^'( functions can be large error in obtained integration values and errors...
User Guide - Page 52
...linear regression, regression is selected as the statistical calculation type.
See Appendix for information about the calculation
formula used for each command. y = A + BX
The following model equation.
Sum Sub-menu (11(STAT)4(Sum))... this:
1n 2o 3xσn 4xσn-1 5p 6yσn 7yσn-1
Number of samples Mean of the X-data Population standard deviation of the X-data Sample standard...
User Guide - Page 53
...the same those for each command. Appendix Quadratic Regression Calculation: to • Examples through all use the data input in Example ...
See Appendix for information about the calculation formula used for linear regression calculations.
Reg Sub-menu (11(STAT...number of y
Appendix Linear Regression Calculation: to
• Examples through all use the ...
User Guide - Page 54
... Formula
Appendix Comparison of data samples. Base-n Calculations
(BASE-N)
The BASE-N Mode lets you perform arithmetic calculations, negative value calculations, and logical operations with binary, octal, decimal, and hexadecimal values. All calculations in this section are a large number of Regression Curves • The following example uses the data input in the BASE-N Mode...
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