Casio fx 991MS Support Question
Casio fx 991MS Support Question
Find answers below for this question about Casio fx 991MS - Scientific Display Calculator.Need a Casio fx 991MS manual? We have 1 online manual for this item!
Question posted by catdagfhfg on May 15th, 2014
How To Use Scientific Calculator Fx 991ms Complex Numbers
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Related Casio fx 991MS Manual Pages
User Guide - Page 1
E
http://world.casio.com/edu_e/ fx-95MS fx-100MS fx-115MS (fx-912MS) fx-570MS fx-991MS
User's Guide
kfx-912MS owners
Please be sure to read the important notice of this manual.
User Guide - Page 4
... will not get into the calculator. • Remove the battery if you do not plan to use the calculator for a long time (fx-95MS/100MS/570MS). • Use only the type of battery specified...fire and personal injury.
• The displays and illustrations (such as key markings) shown in this manual. Batteries
• After removing the battery from the calculator, put it in personal injury or ...
User Guide - Page 5
...; Be sure to press the 5 key before using the calculator for the first time.
• Even if the calculator is operating normally, replace the battery at least once every three years for the fx115MS/fx-570MS/fx-991MS, or at least once every two years for the fx-95MS/fx-100MS. A dead battery can cause memory contents to...
User Guide - Page 8
... Numbers, π, and
Permutation/Combination 20 kAngle Unit Conversion 21
kCoordinate Conversion (Pol (x, y), Rec (r 21
kEngineering Notation Calculations 22
Equation Calculations... 22
kQuadratic and Cubic Equations 22 kSimultaneous Equations 24
Statistical Calculations 26
Standard Deviation 26 Regression Calculations 28
Technical...
User Guide - Page 10
...should divide your calculation into two or more parts.
• Pressing the g key recalls the last result obtained, which you press a number key or ...display. • Be sure to input more information about using the g key.
8
If you need to enter in order to the initial defaults shown below, press A B 2(Mode) =.
Calculation Mode: Angle Unit: Exponential Display Format: Fraction Display...
User Guide - Page 11
... calculation you turn off the calculator. k Making Corrections During Input
• Use e and r to move the cursor to the location you want.
• Press [ to delete the number or...finish a calculation displays the editing screen for that calculation.
• Pressing t does not clear replay memory, so you can recall the last calculation even after an error occurs displays the calculation with ...
User Guide - Page 12
...-statements
A multi-statement is an expression that is used. • To change the exponential display format, press the F
key a number of times until you can display up of two or more than 10 digits and decimal values with more than two decimal places. k Exponential Display Formats
This calculator can select between two formats that determine at...
User Guide - Page 13
fx-95MS:
1 r
Other Models: 1 r r
• Press the number key (1 or 2) that corresponds to
the setting you want to use the display setup (Disp) screen to specify the symbols you reach the setup screen shown below.
A B 3(All) =
Basic Calculations COMP
k Arithmetic Calculations Use the F key to enter the COMP Mode when you want for the decimal point and 3-digit...
User Guide - Page 14
uDecimal ↔ Fraction Conversion
• Use the operation shown below to convert calculation results between decimal values and fraction values.
• Note that mix fraction and decimal values are displayed in decimal format automatically whenever the total number of digits of a fractional value (integer + numerator + denominator + separator marks) exceeds 10.
• Example 1: 2 &#...
User Guide - Page 15
...) screen to specify the display format when a fraction calculation result is greater than one.
• To change the fraction display format, press the q key a number of times until you want to
the setting you reach the setup screen shown below. fx-95MS:
1
Other Models: 1 r
• Press the number key (1 or 2) that corresponds to use.
1(ab/c): Mixed fraction...
User Guide - Page 17
... to change the settings for the number of decimal places, the number of significant digits, or the exponential display format, press the F key a number of times until you want to the setup item you reach the setup screen shown below.
k Degrees, Minutes, Seconds Calculations
• You can perform sexagesimal calculations using degrees (hours), minutes, and seconds, and...
User Guide - Page 19
... if the opera- Independent memory is currently on the display (and also stored in an error.
tion performed by pressing g. • Answer Memory can store up to 12 digits for the mantissa
and two digits for calculating cumulative totals.
• Independent memory uses the same memory area as the first value of your...
User Guide - Page 20
... the result to appear on the display before starting the next calculation.
• π = 3.14159265359
k Trigonometric/Inverse Trigonometric Functions
• To change the default angle unit (degrees, radians, grads), press the F key a number of the variables. Deg Rad G r a
1 23
• Press the number key (1, 2, or 3) that corresponds to use. (90° = π radians = 100 grads...
User Guide - Page 22
...-570MS/fx-991MS.
• Example 6: 1 ҃ 12
1 3
ȕ
1 4
R 3 a , 4 a T a =
• Example 7: 8! ҃ 40320
8 A f =
• Example 8: To generate a random number between
0.000 and 0.999
A M =
0.66400
(The above value is not).
(840)
7 A m 4 =
• Example 11: To determine how many different 4-digit
values can be produced using the numbers 1 through 7
• Numbers...
User Guide - Page 23
... (1, 3) to polar coordinates (r,) (Rad)
r ҃ 2
f* 1 P L 3 T =
* A f in the case of fx-100MS/fx-115MS/fx-570MS/ fx-991MS.
k Angle Unit Conversion • Press A v to display the value of r, or 0 o to display the following menu. * A n in the case of fx-100MS/fx-115MS/fx-570MS/
fx-991MS.
θ ҃ 1.047197551
0 o
• Press 0 n to display the value of .
21
User Guide - Page 25
... final coefficient (c for a quadratic equation, d for a cubic equation), you can cause calculation to
view other solutions.
Solution
Press the ] key to move between coefficients on the display.
Use [ and ] to toggle the display between all of the first solution appears first. This is a complex number, the real part of the solutions for the final coefficient. Pressing...
User Guide - Page 27
... complex numbers for the equation.
Pressing the t key at this point returns to view other solutions.
Variable name
x=
Arrow indicates
direction you
should scroll to scroll between coefficients on the screen and make changes, if you want.
• Note that you input a value for the final coefficient. view other solutions. Use [ and ] to
0.
Calculation...
User Guide - Page 28
... display (n value).
54 S 51 S 55 S 53 S S 54 S 52 S
Sample Standard Deviation (σnҀ1) = 1.407885953
A X 3 =
26 tions noted nearby. To recall this type of data input up to that point is used to clear statistical memory.
• Input data using standard deviation. SD F 2 (fx-95MS) F F 1 (Other Models)
• Always start data input with A B 1(Scl) = to calculate...
User Guide - Page 30
...
Pw r I nv Quad
1 23
• Press the number key (1, 2, or 3) that corresponds to the type of regression you will not be unable to display or edit individual data items any of the data you have ... or REG Mode, you want to perform statistical calculations using regression. REG F 3 (fx-95MS) F F 2 (Other Models)
• Entering the REG Mode displays screens like the ones shown below. Press 1...
User Guide - Page 37
...
This calculator uses memory areas, called "stacks," to temporarily store values (numeric stack) and commands (command stack) according to perform a calculation that is so complex that is
a negative number, the negative number must be enclosed within parentheses. The numeric stack has 10 levels and the command stack has 24 levels. * fx-100MS/fx-115MS/fx-570MS/fx-991MS only. ** fx-570MS/fx-991MS...
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