Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by carlokto on October 1st, 2014
Fixing Calculator Fx-991es When All Answers Are In Standard Form
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Related Casio FX-991ES Manual Pages
User Guide - Page 8
... alpha input mode has been entered by for input of a variable name to the variable. The calculator is in the STAT Mode. The calculator is in the VECTOR Mode. A fixed number of significant digits is in effect. Calculation history memory data is available and can be exited and this indicator will disappear when you...
User Guide - Page 10
...
For this input/output format: Math Linear
Perform this key operation: 1N6(Fix)0-9 1N7(Sci)0-9 1N8(Norm)1(Norm1) or 2(Norm2)
Calculation Result Display Examples • Fix: The value you specify (from 0 to 10) controls the number of significant digits for displayed calculation results.
Calculation results are written on paper.
• Linear format causes fractions and...
User Guide - Page 12
... you input any of =.
Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator lets you need to input the argument and the closing parenthesis ()). Next, you input calculation expressions just as shown below , it .The calculator automatically judges the calculation priority sequence for addition, subtraction, multiplication, and division...
User Guide - Page 19
... values 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 (no irrational number...
User Guide - Page 20
... Mode polar coordinate display (r ∠ θ )
The following are the calculations for ' Form
Calculation Result ȊxȊ < 9 × 109
ȊxȊ < 20π
ȊxȊ < 10000
Calculation results may be
displayed. k ' Form Calculation Range
Note
When performing complex number calculations in decimal form for input values outside of the above ranges. Complex number Abs...
User Guide - Page 21
... denominator.
Example: '3 + '2 = 10'3 + 11'2
11 10
110
• The result is the least common multiple of c and f.
• Since calculation results are displayed in decimal form even when any intermediate result has three or more terms.
Example: (1 + '2 + '3 )(1 - '2 - '3 )(= -4 - 2'6 ) = -8.898979486
E-19 a'b + c
d'e f
→
a′'b + d′'e c′
• c′...
User Guide - Page 22
...
Use the +, -, *, and / keys to perform arithmetic, fraction, percent, and sexagesimal calculations. All calculations in this section are performed in decimal form.
Example: 1 ÷ 6 =
LINE
Initial default setting (Norm1)
FIX
3 decimal places (Fix3)
SCI
3 significant digits (Sci3) • For more information, see "Specifying the Number of decimal places and significant digits...
User Guide - Page 27
... "Ans" command.
• With the above procedure, you need to perform the second calculation immediately after pressing A, press the G key.
k Answer Memory (Ans)
Answer Memory Overview
• Answer Memory contents are stored in independent memory. Independent Memory
Calculation results can be cleared from independent memory. Variables
Six variables named A, B, C, D, X, and Y can...
User Guide - Page 28
Inputting Answer Memory Contents into a calculation, which tells the calculator to independent memory
Subtract the displayed value ...The "M" indicator appears in independent memory.
• Independent memory contents are maintained even if you can add calculation results to or subtract results from independent memory
Recall current independent memory contents
Perform this :
Add the displayed...
User Guide - Page 29
... contents of Answer Memory, independent memory, and all of variable B Sy(A)*Se(B)=
• Variable contents are maintained even if you can assign a specific value or a calculation result to ...without doing anything, press
A(Cancel) instead of variable A, for the name of a variable. Calculation Examples Using Independent Memory
• If the "M" indicator is on the display, perform the ...
User Guide - Page 35
... a single value, a base of the input value. For details, see
Appendix . The calculator will automatically convert it to display the angle unit specification menu shown below. Note that the calculator's default angle unit is a natural logarithm function with
the form of "logmn" while using Math format. If you must input the base (base...
User Guide - Page 39
... can be performed in the range of -1 × 1010 < a < b < 1 × 1010.
• The calculation step is fixed at 1. • ∫(, d/dx(, Pol(, Rec(, and Σ( cannot be used within f(x), a, or b. • Pressing A will interrupt an ongoing Σ calculation. Converting to Y.
E-37
Converting to Polar Coordinates (Pol) Pol(X, Y) X: Specifies the rectangular coordinate X value...
User Guide - Page 41
... digits. Example: 200 ÷ 7 × 14 = 400 LINE
200/7*14=
(Specifies three decimal places.) FIX 1N6(Fix)3
(Calculation is rounded to 10 digits. Display Digits Setting: Fix or Sci The value is rounded to the specified number of digits.)
FIX
10(Rnd)=
E-39 FIX
200/7=
(Round the value to the specified number of display digits setting.
User Guide - Page 42
... in this section to transform a displayed value to engineering notation, or to transform a value between standard form and decimal form. Appendix
Transform the value 1,234 to engineering notation, shifting the decimal point to engineering notation. (Check rounded result.)
FIX
*14=
k Practical Examples
Appendix
∫0π(sinX + cosX )2dX = π
(tol: Not specified)
Confirm that...
User Guide - Page 43
...can take some time to ' form.
You cannot specify the standard form. nπ (n is an integer.)
d c
π
or
a
b c
π
(depending setting)
on
fraction
display
format
• Transformation to a fractional π form is in ' form, you transform from decimal form to standard form, the calculator automatically decides the standard form to decimal form by pressing the f key.
User Guide - Page 49
...statistical operation type uses a single variable or paired variables.
The content to the STAT calculation screen.
Note
• Note that you can perform the procedures under "Inserting a Line... input with the STAT editor screen. Display the MinMax sub-menu of commands for calculating the mean, standard deviation, etc. Deleting All STAT Editor Contents (1) Press 11(STAT)3(Edit). (2) Press...
User Guide - Page 50
...standard deviation
MinMax Sub-menu (11(STAT)6(MinMax))
Select this menu item: 1minX 2maxX
When you select 4(Sum), 5(Var), 6(MinMax), or 7(Distr) on the STAT menu while a single-variable statistical calculation ...When you want to do this:
7Reg
Display the Reg sub-menu of commands for regression calculations • For details see "Distr Sub-menu". Paired-variable Menu Item
Select this menu ...
User Guide - Page 51
... normal
distribution.
Distr Sub-menu (11(STAT)7(Distr))
1 P( 2 Q( 3 R( 4 't
This menu can be used to the following , using the mean , and population
standard deviation. Calculate number of
the sample data. Normalized variate t is 7 (R value for
normalized variate when X = 3)
Distribution probability that is a value greater than the
normalized variate when the ...
User Guide - Page 60
...Answer Memory (MatAns) screen shows the results of the copy operation. MAT
"A" stands for "MatA".
(4) Use the matrix editor screen to input each of the elements into the matrix. • Input is on the display.
(3) Specify the destination of matrix calculations..." indicator to appear on the display switches to the matrix calculation screen.
For more information, see "Rules for Inputting and...
User Guide - Page 66
...values of gravitation; 40: standard atmosphere
E-64 When you want to VctB =
(3, 4). • The following are commonly used in any calculation mode except for BASE-N.... • To recall a scientific constant, press 17(CONST). Determine the size of the angle (angle unit: Deg) formed by
vectors A = (-1, 0, 1)...
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