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 Anonymous-127060 on December 20th, 2013
The Fx 991 Es While Calculating Tries To Be Off What Can I Do
My calculator does not shows the result and tries to go off.so what can be done ??
Current Answers
Related Casio FX-991ES Manual Pages
User Guide - Page 4
....
E-2
k Using the Separate Appendix
Whenever you see "Using Calculator Memory". Initializing the Calculator
Perform the following shows an example of this product and items that is not part of... unit. • The following procedure when you want to initialize the calculator and return the calculation mode and setup to their initial default settings. be liable for illustrative ...
User Guide - Page 5
Doing so can result in personal injury or material damage if ignored. Safety Precautions
Be sure to become...battery, try to take the battery apart, or allow the battery to read the following safety precautions before using a battery can cause it to direct heat or dispose of fire and personal injury. E-3
Disposing of the Calculator
• Never dispose of the calculator by ...
User Guide - Page 6
... large amounts of water and a mild neutral household detergent. Take care never to leave the calculator where it might be subjected to twisting or bending.
• Never try to temperature extremes. Never use and storage of the calculator in a weak solution of humidity or dust. E-4 Very low temperatures can leak, causing damage to...
User Guide - Page 7
.... Important!
• If adjusting display contrast does not improve display readability, it , and then affix the hard case to the back of the calculator as shown in the illustration below. E-5 Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when you press N) is low.
User Guide - Page 8
... mode will be replayed, or there is in the CMPLX Mode. The calculator is standing by pressing the 1 key. This indicator appears after you press a key. A fixed number of decimal places is in independent memory. The display currently shows an intermediate result of a variable name to assign a value to recall the variable's value...
User Guide - Page 9
...
BASE-N
EQN MATRIX
TABLE
VECTOR
(2) Press the number key that takes a long time to execute, the display may show only the above indicators (without any value) while it performs the calculation internally. k Configuring the Calculator Setup
Pressing 1N(SETUP) displays the setup menu, which you can jump between using c and f. The setup menu...
User Guide - Page 10
...about how to 10) controls the number of significant digits for displayed calculation results.
Calculation results are rounded off to be displayed as the default
angle unit:
... fractions, irrational numbers, and other expressions to the specified digit before being displayed. Calculation results are written on paper.
• Linear format causes fractions and other expressions to ...
User Guide - Page 11
Outside the specified range, results are displayed using exponential format. To specify this: Show FREQ Column Hide FREQ Column
Perform ... column of the two available settings (Norm1, Norm2) determines the range in which results will be displayed in nonexponential format. The decimal point for calculation results
. E-9 • Norm: Selecting one of the STAT Mode STAT editor screen ...
User Guide - Page 12
... Norm1 d/c a+bi OFF Dot
• To 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...
User Guide - Page 13
... omit one byte. Displaying a Long Expression The display can input up to 99 bytes of a calculation, immediately before the = key is displayed, you can scroll left and view the hidden part by...Cursor
• When the ] indicator is pressed. Number of Input Characters (Bytes) • You can show up to 14 characters at the end of data for a single expression. Basically, each item you are...
User Guide - Page 14
... a horizontal flashing line ( ) when the overwrite mode is selected. • The initial default for more information. • The calculator automatically changes to I cursor
appears, terminate the expression at a convenient point and
calculate the result. • Normally the input cursor appears as the input mode. k Correcting an Expression
This section explains how to Math...
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
... d.
k Displaying the Location of 14 ÷ 10 × 2 = Use the insert mode for the following operation. This will become impossible if the height of the calculation you nest too many functions and/or parentheses.
d1
=
You can then make necessary corrections. The maximum allowable height of...
User Guide - Page 17
...; The "Bytes" column shows the number of bytes of the cursor on the
display when you input using Math format.
Function/Symbol Improper Fraction Mixed Fraction log(a,b) (Logarithm) 10^x (Power of 10) e^x (Power of e) Square Root Cube Root Square, Cube Reciprocal Power Power Root Integral Derivative Σ Calculation Absolute Value Parentheses
Key...
User Guide - Page 18
... (instead of 1 + (2 + 3) + 4 into the function specified here.
The following examples show the other functions that value or fraction will be used in the parentheses into the function '.
•...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
... should be displayed 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. Example 1: '2 +'8 = 3'2
MATH
Math
1
!2e+!8=
Math
2
!2e+!81=
E-17
For details, see "Using...
User Guide - Page 26
Calculation history memory shows both calculation expressions and results. Example:
LINE
1+1= 2+2= 3+3=
f
f
• Note that support calculation history memory: COMP (N1), CMPLX (N2), BASE-N (N4)
Recalling Calculation History Memory Contents Press f to back-step through calculation history memory contents. Modes that calculation history memory contents are performing causes calculation ...
User Guide - Page 71
... you want. Math ERROR
• Cause • The intermediate or final result of the calculation you are performing exceeds the allowable calculation range. • Your input exceeds the allowable input range (particularly when using functions). • The calculation you
were using independent memory or a variable as the argument of a function, make sure that in...
User Guide - Page 72
... whose dimensions do not specify the solution variable. • Specify a variable that is close to perform your calculation. • Action
• Narrow the table calculation range by changing the Start, End, and Step values, and try again. • Action • Make necessary corrections.
Variable ERROR (SOLVE feature only) • Cause
• You did...
User Guide - Page 73
...(2) Make sure that you are trying to perform a routine that checks whether calculation functions are not what you will
cause the calculator to perform. (3) If the ...Calculation Mode and Other Settings" under "Calculation Modes and Calculator Setup". (4) Initialize all modes and settings by performing the following steps whenever an error occurs during a calculation or when calculation results...
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