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 Berjeep on December 24th, 2013
Fx991es Plus Can Draw Graph
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Related Casio FX-991ES Manual Pages
User Guide - Page 5
... the risk of fire and personal injury.
Battery
• After removing the battery from the calculator, put it into the hands of small children and accidentally swallowed.
• Keep batteries out...the battery to direct heat or dispose of it by burning it will not get into the
calculator. • Use only the type of small children. If accidentally swallowed, consult with a physician...
User Guide - Page 6
...out all important data.
• Avoid use and storage of the calculator in areas subjected to clean the calculator.
Doing so can remove printed markings and can cause slow display response...E-4 Always keep written records of all excess liquid before using the calculator for the first time.
• Even if the calculator is operating normally, replace the battery at least once every three ...
User Guide - Page 7
... adjustment screen.
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. After the setting is the way you want, press A.
• You can also adjust contrast using the...
User Guide - Page 8
.... The default angle unit is grads. The default angle unit is degrees. Calculation history memory data is in effect. The display currently shows an intermediate result of... and can be exited and this indicator will disappear when you press a key. Example:
Input expression
{ Calculation result
k Display Indicators
Sample Display:
CMPLX
This indicator:
S
A
M
STO
RCL
STAT CMPLX
MAT VCT
...
User Guide - Page 9
..., which you can jump between using c and f. 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 want to perform this mode:
COMP CMPLX
STAT
BASE...
User Guide - Page 10
... numbers, and other expressions to 10) controls the number of
decimal places for displayed calculation results. Math
Math Format
Linear Format
Specifying the Default Angle Unit
To specify 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 the specified digit ...
User Guide - Page 11
only.
E-9 Outside the specified range, results are displayed using exponential format. The decimal point for input values is applied for calculation results
. • Norm: Selecting one of the STAT Mode STAT editor screen on or off. To specify this: Show FREQ Column Hide FREQ Column
Perform ...
User Guide - Page 12
...(, det(, Trn(, Rnd(
E-10
Example: 2 (5 + 4) - 2 × (-3) =
LINE
2(5+4)2*y3=
Inputting a Function with the open parenthesis ( ( ) character. Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator lets you need to this: COMP MthIO Deg Norm1 d/c a+bi OFF Dot
• To cancel initialization without doing anything, press A(Cancel...
User Guide - Page 13
At this time, you can show up to 99 bytes of a calculation, immediately before the = key is pressed. Input expression: 1111 + 2222 + 3333 + 444
Math
Displayed portion:
Cursor
• When the ] indicator is displayed, you can input ...
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
... become impossible if you press =, press d or e.
If this happens, divide the calculation into multiple parts and calculate each part separately. This is two display screens (31 dots × 2).
Important!... many functions and/or parentheses. This will become impossible if the height of the calculation you can also exit the error screen by mistake instead of 14 ÷ 10 ×...
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($) 1i(%) ! 1!(#) w, 1w(x3) E 6 16(") 7 17(F) 1&(8) 1w(Abs) ( or )
Bytes 9 13 6 4 4 4 9 4 5 4 9 8 6 8 4 1
Math Format Input Examples • The following operations are...
User Guide - Page 18
... as shown in the Example 3 screen shot.
If you need to here.
Example 3: To input (1 + 2 )2 × 2 =
5
MATH
Math
(1+'2c5e)
w*2=
• When you press = and obtain a calculation result using Math format, you can be incorporated into the function specified here.
• If the cursor is located left of a particular value or fraction...
User Guide - Page 19
Note
• When "LineIO" is selected for the input/output format, you can also incorporate values into the following functions. 1l($), 1i(%), !, 6, 1!(#), 1w(Abs)
Displaying Calculation Results in a Form that Includes '2, π, etc. (Irrational Number Form)
When "MthIO" is selected for S-D conversion. For details, see "Using S-D Transformation".
Original Expression:
Function Key ...
User Guide - Page 20
... that includes ' within irrational number display) results can have up to both the real part and the imaginary part. Arithmetic calculations of trigonometric calculation results. Complex number Abs calculations
d. Angle Unit Setting Deg Rad
Gra
Angle Value Input
Units of 15°
Multiples
of
1 12
π
radians
50 Multiples of the above ranges...
User Guide - Page 21
... three or more terms.
Example: (1 + '2 + '3 )(1 - '2 - '3 )(= -4 - 2'6 ) = -8.898979486
E-19 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 outside of the examples are reduced...
User Guide - Page 22
...
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. E-20 All calculations in this section are performed in decimal form.
Number of Decimal Places and Number of Significant Digits You can specify a fixed number of Display...
User Guide - Page 23
...+ 3) × (4 - 1) = 15
LINE
(2+3)* (4-1=
k Fraction Calculations
How you should input fractions depends on the input/output format that involves both ...
(7'3)
(2'1'3)
• Under initial default settings, fractions are displayed as improper fractions.
• Fraction calculation results are always reduced before being displayed. This is true only in decimal format.
• The result ...
User Guide - Page 33
... "Continue: [=]", asking if you want to cancel the SOLVE operation.
E-31 x + 1 for the following types of the obtained solution. A periodic function (y = sin(x), etc.) - A function whose graph includes a steep slope (y = e x, y =1/x, etc.) - • SOLVE uses Newton's Method, so even if there are multiple solutions, only one of them will be returned.
• Newton...
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