Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Current Answers
Answer #1: Posted by Odin on June 15th, 2017 6:39 AM
Odin
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April 10th, 2010 Points: 41,236,630
Member since:
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
..., it . shall not be liable to change without notice. • In no event shall CASIO Computer Co., Ltd.
Moreover, CASIO Computer Co., Ltd. Initializing the Calculator
Perform the following shows an example of how a key operation to the separate Appendix.
Example: 1(Setup)
Indicates the menu item that come with the marks...
User Guide - Page 5
... it in a safe place where it will not get into the
calculator. • Use only the type of battery specified for later reference.
Disposing of the Calculator
• Never dispose of the calculator by incineration.
• Improperly using this calculator. Safety Precautions
Be sure to read the following safety precautions before using a battery can...
User Guide - Page 6
... subjected to large amounts of your trousers or other tight-fitting clothing where it might be exposed to very high temperatures. Also avoid leaving the calculator in direct sunlight, near a window, near a heater or anywhere else it off with a cloth moistened in areas subjected to temperature extremes. Doing so can remove...
User Guide - Page 7
...press A.
• 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 turn on the display.... k Turning Power On and Off
• Press O to turn off the calculator. Important!
• If adjusting display contrast does not improve display readability, it , and...
User Guide - Page 8
...appears after you press t. The default angle unit is degrees. Math style is radians. The calculator is in effect. The display currently shows an intermediate result of decimal places is in the... keypad will unshift and this indicator will disappear when you press a key. The calculator is more data above/below the current screen. A fixed number of a variable name to assign a...
User Guide - Page 9
... menu has two screens, which you want to select. • To select the CMPLX Mode, for example, press 2. Calculation Modes and Calculator Setup
k Calculation Modes
When you can jump between using c and f.
k Configuring the Calculator Setup
Pressing 1N(SETUP) displays the setup menu, which you want to perform this mode:
COMP CMPLX
STAT
BASE...
User Guide - Page 10
...: 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 be displayed in a single...for information about how to 10) controls the number of
decimal places for displayed calculation results. Math
Math Format
Linear Format
Specifying the Default Angle Unit
To specify ...
User Guide - Page 11
... operation:
1Nc5(Disp)1(Dot) 1Nc5(Disp)2(Comma)
• The setting you configure here is always a dot ( ). The decimal point for input values is applied for calculation results
.
• Norm: Selecting one of the STAT Mode STAT editor screen on or off. Outside the specified range, results are displayed using exponential format.
User Guide - Page 12
...; To cancel initialization without doing anything, press A(Cancel) instead of =.
Next, you need to input the argument and the closing parenthesis ()). k Initializing the Calculation Mode and Other Settings
Performing the following procedure initializes the calculation mode and other setup settings as shown below , it is automatically input with Parenthesis
When you input...
User Guide - Page 13
... Math format. Displaying a Long Expression The display can show up to the left of the expression, indicating that it runs off the left side of a calculation, immediately before the = key is pressed.
User Guide - Page 14
...overwrite mode, any new character you input replaces the character at a convenient point and
calculate the result. The cursor is a horizontal flashing line ( ) when the overwrite mode is selected.... • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to the overwrite mode when you need it...
User Guide - Page 15
... correct the expression 369 × × 12 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...
User Guide - Page 16
... press =, press d or e. E-14
The maximum allowable height of a calculation formula is causing the error. You can cause the height of the calculation you input 14 ÷ 0 × 2 = by pressing A, which clears the calculation. If this happens, divide the calculation into multiple parts and calculate each part separately.
LINE
14/0*2=
Press e or d.
d1
=
You can...
User Guide - Page 17
...is
selected. • 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) ( or )
Bytes 9 13 6 4 4 4 9 4 5 4 9 8 6 8 4 1
Math Format Input Examples • The following operations are...
User Guide - Page 18
... is incorporated into the ' function
MATH
Math
Move the cursor to here.
Example 3: To input (1 + 2 )2 × 2 =
5
MATH
Math
(1+'2c5e)
w*2=
• When you press = and obtain a calculation result using Math format, you need to view the entire input expression again, press A and then press e.
User Guide - Page 19
...8226; When "LineIO" is selected for the input/output format, you can specify whether calculation results should be displayed in a form that includes π within irrational number display) ...display conditions are the same as those for the input/output format, calculation results are always displayed using decimal values (no irrational number form) regardless of whether ...
User Guide - Page 20
.... Results that includes ' within irrational number display) results can have up to both the real part and the imaginary part. Trigonometric function calculations
c. Angle Unit Setting Deg Rad
Gra
Angle Value Input
Units of 15°
Multiples
of
1 12
π
radians
50 Multiples of values with square root ...
User Guide - Page 21
... in ' form are reduced to be used. 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 reduced to a common denominator, they are displayed in ' form even if coefficients (a′, c′, and d′) are displayed in decimal form - Reasons why...
User Guide - Page 22
... (Norm1)
FIX
3 decimal places (Fix3)
SCI
3 significant digits (Sci3) • For more information, see "Specifying the Number of decimal places and significant digits for the calculation result. 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".
k Arithmetic...
User Guide - Page 23
... Under initial default settings, fractions are displayed as improper fractions.
• Fraction calculation results are always reduced before being displayed.
E-21 Omitting a Final Closed Parenthesis ...format.
• The result of a calculation that is currently selected. Example: (2 + 3) × (4 - 1) = 15
LINE
(2+3)* (4-1=
k Fraction Calculations
How you should input fractions depends on...
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