Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by pistmbre on November 25th, 2013
How To Use Scientific Calculator Casio Fx 991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
...Using Calculator Memory". Note that come with the marks in the Appendix: Deg : Specify Degree for
special, collateral, incidental, or consequential damages in calculator memory.
19(CLR)3(All)=(Yes)
• For information about calculation modes and setup settings, see "Calculation Modes and Calculator... notice. • In no event shall CASIO Computer Co., Ltd. Rad : Specify Radian...
User Guide - Page 5
... of fire and personal injury. Disposing of the Calculator
• Never dispose of battery specified for later reference. Doing so ...used to indicate information that the battery's positive k and negative l ends are facing correctly when you load it will not get into the
calculator. • Use only the type of the calculator by incineration.
• Improperly using this calculator...
User Guide - Page 6
Handling Precautions
• Be sure to strong impact.
• Never twist or bend the calculator. Very low temperatures can cause discoloration or deformation of the calculator's case, and damage to internal circuitry.
• Avoid use and storage of the calculator in areas subjected to become corrupted or lost completely. Doing so can remove printed markings...
User Guide - Page 7
... remove it probably means that battery power is on the calculator. • Press 1A(OFF) to turn on the display. Replace the battery. Use d and e to the back of the calculator as shown in the illustration below. Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when you...
User Guide - Page 9
...to display the mode
menu. 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 execute, the display may show only the above indicators...
User Guide - Page 10
....
• See "Adjusting Display Contrast" for information about how to the specified digit before being displayed.
Calculation results are rounded off to use "]CONT'". Example: 1 ÷ 7 = 1.4286 × 10-1 (Sci5) 1.429 × 10-1 (Sci4) E-8 Calculation results are rounded off to 9) controls the number of Significant Digits
Exponential Display Range
Perform this key...
User Guide - Page 11
...:
Rectangular Coordinates 1Nc3(CMPLX)1(a+bi)
Polar Coordinates
1Nc3(CMPLX)2(r∠θ)
Specifying the Statistical Display Format
Use the following procedure to turn display of the frequency (FREQ) column of the two available settings (... ( ). E-9
only. The decimal point for calculation results
.
• Norm: Selecting one of the STAT Mode STAT editor screen on or off.
User Guide - Page 12
...(, Neg(, 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 input any of =.
Next, you need to this: COMP MthIO Deg Norm1 d/c a+bi OFF Dot
• To cancel initialization without...
User Guide - Page 13
...one or more information, see "Omitting a Final Closed Parenthesis". At this time, you input uses up to 14 characters at the end of Input Characters (Bytes) • You can input...215; i, etc. Number of a calculation, immediately before the = key is pressed. E-11
Final Closed Parenthesis You can omit one byte.
Basically, each item you can use Math format. A function that come at...
User Guide - Page 14
... for Linear format input is selected. • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to make room when you need it.
•....You can only use depends on the display screen. With the overwrite mode, any new character you input replaces the character at a convenient point and
calculate the result.
When...
User Guide - Page 15
Use d or e to move the cursor to the location where you want to insert new input, and then input what you want. E-13 Deleting ... 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
... 14 ÷ 10 × 2 = Use the insert mode for the following operation.
If this happens, divide the calculation into multiple parts and calculate each part separately. Important!
• Certain ... e.
E-14 Example: When you are inputting exceeds the allowable limit.
• Nesting of a calculation formula to be greater than one display line. This is two display screens (31 dots ×...
User Guide - Page 17
...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 Operation ' 1'(() & 1l($) 1i(%) ! 1!(#) w, 1w(x3) E 6 16(") 7 17(F) 1&(8) 1w(...
User Guide - Page 18
... the Example 3 screen shot. This incorporates the expression in the above procedure, and the required key operations to use them. 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 input can be incorporated into the function specified here.
• If the cursor is...
User Guide - Page 34
...arguments.
• The angle unit required by pressing A. k Pi (π) and Natural Logarithm Base e
You can use the calculator's built-in all calculation modes. The following shows the required key operations and the values this calculator uses for BASE-N.
k Trigonometric and Inverse Trigonometric Functions
• Trigonometric and inverse trigonometric functions can interrupt an ongoing...
User Guide - Page 39
... Conversion
Rectangular Coordinates (Rec)
Polar Coordinates (Pol)
• Coordinate conversion can obtain the sum of an input f(x) expression for a specific range. Σ calculations are performed using the following formula.
Σ( f(x), a, b) = f(a) + f(a + 1) + .... + f(b)
f(x): Function of X (All non-X variables are treated as an angle value, in the range of -180° < θ...
User Guide - Page 51
...
Select single-variable (1-VAR) and input the following data:
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
(FREQ: ON)
Edit the data to the following , using the mean , and population
standard deviation. Calculate sum of squares of the sample data and sum of standard normal
distribution. Performing standard normal distribution approximation on the STAT editor
screen. Distribution probability ...
User Guide - Page 66
... (Vector Dot Product) VctA × VctB (Vector Cross Product) Obtain the absolute values of gravitation; 40: standard atmosphere
E-64 This displays
the scientific constant menu. You can use the vectors input in scientific calculations. When you want to the constant you recall a constant, its unique symbol appears on the display. • The following examples...
User Guide - Page 68
... is omitted: Multiplication sign omitted immediately before π, e, variables, scientific constants (2π, 5A, πA, 3mp, 2i, etc.), functions with parentheses...use of parentheses can result in the same calculation. Example: 1/2i= 1/(2i)=
1 ÷ 2i = 1 i
2 1 ÷ (2i) = -
1
i
2
k Stack Limitations
This calculator uses memory areas called stacks to temporarily store lower calculation...
User Guide - Page 73
... be cleared. Reference
k Power Requirements and Battery Replacement
Your calculator uses a TWO WAY POWER system that button battery power is low. The TWO WAY POWER system, ...errors. (2) Make sure that you are trying to use the calculator if its button battery is dim or failure of the calculator... E-71 Normally, calculators equipped with G13 type button battery (LR44). If one...
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