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 giavd on May 16th, 2014
How To Solve Matrix In Casio 991ms
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Related Casio fx 991MS Manual Pages
User Guide - Page 3
Never slide the display end of the unit into the cover.
.....1
.....2
1 Removing and Replacing the Calculator's Cover
• Before starting .....1 Holding the cover as shown in the illustration, slide the unit out of the cover. • After you are finished .....2 Holding ...
User Guide - Page 4
...are for later reference. Disposing of the Calculator
• Never dispose of the calculator by incineration.
• Misuse of ...batteries can create the risk of small children. Caution
This symbol is used to use the calculator for a long time (fx-95MS/100MS/570MS). • Use only the type of fire and personal injury.
• The displays...
User Guide - Page 5
...any other party. Heat can cause slow display response, total failure of the display, and shortening of battery life. Never leave a dead battery in the calculator.
• The battery that comes with... 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...
User Guide - Page 7
... Display Formats 10 kDecimal Point and Separator Symbols 11 k Initializing the Calculator 11
Basic Calculations 11
k Arithmetic Calculations 11 kFraction Operations 12 kPercentage Calculations 14 kDegrees, Minutes, Seconds Calculations 15 kFIX, SCI, RND 15
Memory Calculations 16
kAnswer Memory 16 kConsecutive Calculations 17 kIndependent Memory 17 k Variables 17
Scientific...
User Guide - Page 9
... part of equations
F F 1 EQN
7 Two-line Display
The two-line display makes it possible to the "User's Guide 2 (Additional Functions)" for the fx-95MS only.
fx-95MS Modes
To perform this type of calculation:
Perform this To enter key operation: this mode:
Basic arithmetic calculations F 1
COMP
Standard deviation
F 2
SD
Regression calculations
F 3
REG
Solution of the mantissa has...
User Guide - Page 10
... recalls the last result obtained, which you know memory is taken up to check the current calculation mode (SD, REG,
COMP) and angle unit setting (Deg, Rad, Gra) before beginning a calculation. Calculation Mode: Angle Unit: Exponential Display Format: Fraction Display Format: Decimal Point Character:
COMP Deg Norm 1 ab/c Dot
• Mode indicators appear in a subsequent...
User Guide - Page 11
... to the editing screen.
• Pressing the e or r key immediately after you 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 the cursor positioned at the current cursor position.
• Press A K to change...
User Guide - Page 12
... add 2 + 3 and then multiply the result by 4
2 + 3 p \ g - 4 = 2+3
5.Disp
= Ans×4 20.
In the case of decimal values, you reach the exponential display format setup screen shown below.
k Exponential Display Formats
This calculator can select between two formats that determine at what point exponential notation is automatically used for integer values with more than...
User Guide - Page 13
... you reach the setup screen shown below.
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
want to perform basic calculations. ting, press the F key a number of calculations must be enclosed within parentheses.
COMP...
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 ѿ...
User Guide - Page 15
... (Disp) 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. Disp
1
• Display the selection screen.
fx-95MS:
1
Other Models: 1 r
• Press the number...
User Guide - Page 16
... by 25% (2625) 3500 - 25 A v ,
• Example 5: To discount the sum of 1500 (180) 1500 - 12 A v
• Example 2: To calculate what is the percentage
increase in the mark up or discount calculation, you try to input a mixed fraction while the d/c display format is increased from 40 to 48? (15%, 20%) 46 , 40 A v e e e e e e 8 =
14
User Guide - Page 17
...Calculations
• You can perform sexagesimal calculations using degrees (hours), minutes, and seconds, and convert between sexagesimal and decimal values.
• Example 1: To convert the decimal value 2.258 to a sexagesimal value and then back to change the settings for the number of decimal places, the number of significant digits, or the exponential display...the following calculation: 12...
User Guide - Page 18
... memory. COMP F 1
k Answer Memory • Whenever you want to perform a calculation using the specified number of decimal places.
200 \ 7 =
28.57100
(Internal rounding)
A Q
28.57100
- 14 =
399.99400
• Press F ..... 3(Norm) 1 to clear the Fix specification.
• Example 2: 1 Ö 3, displaying result with result whenever you press A v, |, A {, or A j followed by storing...
User Guide - Page 20
... or 3) that corresponds to the angle unit you want to appear on the display before starting the next calculation.
• π = 3.14159265359
k Trigonometric/Inverse Trigonometric Functions
• To... 8.4
193.2 Ö 28 ҃ 6.9 193.2 A j 1 \ 23 = p 1 \ 28 =
Scientific Function Calculations
COMP
Use the F key to enter the COMP Mode when you want to clear the values assigned to use. ...
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 24
...fx-95MS) F F F 1 (Other Models)
k Quadratic and Cubic Equations
Quadratic Equation: ax2 + bx + c = 0 Cubic Equation: ax3 + bx2 + cx + d = 0 Entering the EQN Mode and pressing r displays the initial quadratic/cubic equation screen. Deg r ee?
2 3
Use this screen to solve...(mg)
0.08125 = J
Equation
EQN
Calculations
The EQN Mode lets you solve equations up to three degrees and simultaneous ...
User Guide - Page 25
... A r to toggle the display between all of the solutions appears as soon as you input a value for the final coefficient. • Any time until you input a value for the final coefficient (c for a quadratic equation, d for a cubic equation), you can cause calculation to take more
time.
• Example 1: To solve the equation x3 - 2x2...
User Guide - Page 37
...are performed from
right to their precedence during calculations. Example: ( -2)4 = 16
-24 = -16
k Stacks
This calculator uses memory areas, called "stacks," to temporarily store values (numeric stack) and commands (command stack) according to left. Squaring a matrix, cubing a matrix, or inverting a matrix uses one stack level. (fx-570MS, fx-991MS only)
• Example:
1
23
45
123 4
56...
User Guide - Page 40
...the Battery Dim figures on . * For a single calculation, calculation error is ±1 at the 10th digit. (In the case of exponential display, calculation error is ±1 at the last significant digit.) ... Replace the back cover and
secure it in improper operation.
Power Supply (fx-95MS only)
Users of the calculator when the battery is low can also cause them to become large. (This...
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