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 ashnel256 on March 17th, 2015
How To Use Fx-991 In Calculating Mathematics
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Request from Noursms on January 24th, 2024 2:10 PM
What specific features or functions of the Casio fx-991 are you interested in learning more about?
What specific features or functions of the Casio fx-991 are you interested in learning more about?
Fraction calculations
Combination and permutation
Statistics
Equation mode
Derivative and integral functions
Current Answers
Answer #1: Posted by TechSupport101 on March 17th, 2015 6:24 AM
TechSupport101
Member since:
May 24th, 2013 Points: 12,171,305
Member since:
May 24th, 2013 Points: 12,171,305
Please see the model's manual here http://www.helpowl.com/manuals/Casio/FX991ES/145884 for the best advice on your Mathematical calculation options.
Related Casio FX-991ES Manual Pages
User Guide - Page 4
..., incidental, or consequential damages in connection with it means you want to initialize the calculator and return the calculation mode and setup to their initial default settings. Moreover, CASIO Computer Co., Ltd. k Using the Separate Appendix
Whenever you see "Using Calculator Memory". • The following procedure when you should refer to the separate Appendix. E-2 Rad...
User Guide - Page 5
... battery specified for later reference.
Caution
This symbol is used to read the following safety precautions before using a battery can cause it . Battery
• After removing the battery from the calculator, put it in a safe place where it will not get into the
calculator. • Use only the type of small children. Never expose the...
User Guide - Page 6
... replacement sooner than the normal expected battery life.
• Low battery power can cause discoloration or deformation of the calculator's case, and damage to internal circuitry.
• Avoid use and storage of the calculator in the pocket of your trousers or other volatile agents to and malfunction of water and a mild neutral household...
User Guide - Page 7
... case downwards to remove it probably means that battery power is on the calculator. • Press 1A(OFF) to turn off the calculator. After the setting is the way you press N) is low. Use d and e to the back of the calculator as shown in the illustration below.
k Adjusting Display Contrast
1N(SETUP)c6(]CONT...
User Guide - Page 9
..., which you can jump between using c and f.
k Configuring the Calculator Setup
Pressing 1N(SETUP) displays the setup menu, which you can use to control how the calculations are executed and displayed. c
f
E-7
Select this type of operation: General calculations Complex number calculations Statistical and regression calculations Calculations involving specific number systems (binary...
User Guide - Page 10
... 1N7(Sci)0-9 1N8(Norm)1(Norm1) or 2(Norm2)
Calculation Result Display Examples • Fix: The value you specify (from 0 to use "]CONT'". Calculation results are rounded off to the specified digit before ...247; 7 = 1.4286 × 10-1 (Sci5) 1.429 × 10-1 (Sci4) E-8 Calculation results are written on paper.
• Linear format causes fractions and other expressions to be displayed ...
User Guide - Page 11
... format:
Dot (.) , Comma ( )
Perform this key operation: number format:
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 (Norm1, Norm2) determines the range in which results will...
User Guide - Page 12
...arg(, Conjg(, Not(, Neg(, det(, Trn(, Rnd(
E-10 Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator lets you input calculation expressions just as shown below , it .The calculator automatically judges the calculation priority sequence for addition, subtraction, multiplication, and division, functions, and parentheses. Next, you input any...
User Guide - Page 13
...input (like 1s(sin-1)) also uses only one byte. At this time, you can show up to scroll back.
Note, however, that it runs off the left side of a calculation, immediately before the = key ...to 14 characters at the end of the screen.
E-11 Basically, each item you want to use the e key to 99 bytes of the expression. Omitting the Multiplication Sign You can input up to ...
User Guide - Page 14
...overwrite mode, any new character you input replaces the character at a convenient point and
calculate the result. Changing the Character or Function You Just Input
Example: To correct the ...to the left to I ) when the insert mode is insert.You can only use depends on the display screen. The procedure you should use the insert mode. You can switch to the overwrite mode by pressing 1Y(INS)....
User Guide - Page 15
... 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 a Calculation Always use the insert mode for this operation. E-13
Use d or e to move the cursor to the location where you want to insert ...
User Guide - Page 16
... display fractions and some functions using the same format as they appear in your textbook. Important!
• Certain types of expressions can then make necessary corrections. The maximum allowable height of a calculation formula is causing the error. Further input will become impossible if the height of the calculation you can also exit the...
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(Abs...
User Guide - Page 18
... off as shown here. Math
! Incorporating a Value into a Function When using Math format, part of the expression you input can be incorporated into the ...)
w*2=
• When you press = and obtain a calculation result using Math format, you can be used in the above procedure, and the required key operations to use them.
Example: To incorporate the expression inside of the parentheses...
User Guide - Page 35
... 3(g)=
Appendix cos (π radians) = -1, cos (100 grads) = 0 cos-1 (-1) = 180
cos-1 (-1) = π
k Exponential Functions and Logarithmic Functions
• Exponential and logarithmic functions can be used for input. The calculator will automatically convert it to display the angle unit specification menu shown below. For details, see
Appendix . E-33
k Converting an Input Value to the...
User Guide - Page 45
... real part and imaginary part are shown in two different lines.
Example 2: '2 ∠ 45 = 1 + i
(Angle Unit: Deg)
MATH
CMPLX
Math
!2e1y(∠)45=
Examples of Calculation Results Using Polar
Coordinate Format (r ∠ θ)
Example 1: 2 × ('3 + i) = 2'3 + 2i = 4 ∠ 30
(Angle Unit: Deg)
MATH
CMPLX
Math
2*(!3e+i)=
• With Linear format, the absolute value...
User Guide - Page 66
... mode except for BASE-N. • To recall a scientific constant, press 17(CONST). VctA + VctB (Vector Addition) 3 × VctA (Vector Scalar Multiplication)
VctB - 3 × VctA (Calculation example using VctAns) VctA • VctB (Vector Dot Product) VctA × VctB (Vector Cross Product) Obtain the absolute values of gravitation; 40: standard atmosphere
E-64 Determine the...
User Guide - Page 69
.... sin-1x cos-1x
GRA Same as the matrix stack, described above. k Calculation Ranges, Number of Digits, and Precision
The calculation range, number of digits used for storage of whether the input value is a real number or a complex number.
Performing a calculation that the numeric stack effectively has only five levels in the CMPLX Mode...
User Guide - Page 71
... the memory or variable value is a problem with the argument of the calculation you
were using before the error message appeared.
k Error Messages
The calculator will display an error message when a result exceeds the calculation range, when you are performing contains an illegal mathematical operation (such as division by zero).
• Action • Check the...
User Guide - Page 72
...
• Check for errors in a calculation was input without the ending condition being fulfilled.
• Action • Try increasing the tol value.
Note that you are compatible with matrices or vectors whose dimensions do not specify the solution variable. • Specify a variable that is close to use in the equation that this...
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