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 wabea on August 31st, 2014
How To Find Inverse Of A Matrix Using Casio Fx-991ms
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Related Casio fx 991MS Manual Pages
User Guide - Page 1
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. E
http://world.casio.com/edu_e/
User Guide - Page 4
... of fire and personal injury.
• The displays and illustrations (such as key markings) shown in a safe place where it 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 fire and personal injury...
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 leak, causing damage...
User Guide - Page 7
... 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 Function Calculations .......... 18
kTrigonometric/Inverse Trigonometric Functions...
User Guide - Page 9
... modes and their selection.
A separator symbol is displayed every three digits when the integer part of equations
F F 1 EQN
7 Before getting started...
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
..., takes up only one step.
• You can input up each section. 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 calculation. k Input Capacity
• The memory area used to let you can hold 79 "steps." See "Answer Memory" for...
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
... places. F i x Sc i No r m
1 23
• Press 3. u Norm 2 With Norm 2, exponential notation is used for integer values with more than 10 digits and decimal values with more smaller expressions, which are automatically displayed using the Norm 1 format.
10
k Exponential Display Formats
This calculator can display up of times until you can select between two formats that appears...
User Guide - Page 13
... sin -1.23 → S R D 1.23 T
11 Disp
1
• Display the selection screen.
ting, press the F key a number of calculations must be enclosed within parentheses. A B 3(All) =
Basic Calculations COMP
k Arithmetic Calculations Use the F key to initialize the calculation mode and setup, and clear replay memory and variables. fx-95MS:
1 r
Other Models: 1 r r
• Press the number key...
User Guide - Page 14
... is not necessary to perform.
12 k Fraction Operations uFraction Calculations
• Values are always decimal.
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...
User Guide - Page 15
fx-95MS:
1
Other Models: 1 r
• Press the number key (1 or 2) that corresponds to
the setting you want to specify the display format when a fraction calculation result is greater than one.
• To change the fraction display...00
A B
5 3.00
A B
1 2 3.00
• You can use the display setup (Disp) screen to use.
1(ab/c): Mixed fraction 2(d/c): Improper fraction
13 Disp
1
•...
User Guide - Page 20
...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.
A B 1(Mcl) =
• Example: 193.2 Ö 23 ҃ 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...
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-member groups 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 24
...Calculations
The EQN Mode lets you solve equations up to three degrees and simultaneous linear equations with up to specify 2 (quadratic) or 3 (cubic) as the degree of the equation, and input values for each of the coefficients. Use... the F key to enter the EQN Mode when you
should scroll to solve an equation.
EQN F F 1 (fx-95MS) F F F 1 (Other ...
User Guide - Page 28
... the key opera-
To recall this key operation:
A U 1 A U 2 A U 3 A X 1 A X 2 A X 3
• Example: To calculate σnҀ1, σn, o, n, Σx, and Σx2 for n, Σx, Σx2, o, σn and σn-1, which you want to clear statistical memory.
• Input data using the key sequence shown below. SD F 2 (fx-95MS) F F 1 (Other Models)
• Always start data input with...
User Guide - Page 30
... not be unable 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 2 to use.
1 (Lin) : Linear regression 2 (Log) : Logarithmic regression 3 (Exp) : Exponential regression r 1 (Pwr) : Power regression r 2 (Inv) : Inverse regression r 3 (Quad) : Quadratic regression
28 If...
User Guide - Page 33
... = 0.965517241
A X r r 3 K =
Sample Covariance = 35
E A U r 3 , A U 3 - Temperature at 1000 hPa = 4.642857143
1000 A X r r r 1 =
Coefficient of x)
118 48.0 for yi = 20. A X r 1 F \ E A U 3 , 1 F =
u Logarithmic, Exponential, Power, and Inverse Regression
• Use the same key operations as linear regression to de-
29
1.6 termine the regression formula terms
for the data nearby.
User Guide - Page 37
.... exIn 120 → ex{In( 120)} • Other operations are performed first. • When a calculation contains an argument that is exceeded. • Matrix calculations use up to their precedence during calculations. 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 7
Numeric Stack 12 23 34 45 54...
User Guide - Page 40
... the case of exponential display, calculation error is ±1 at the last significant digit.) Errors are cumulative in the case of consecutive calculations, which can also cause them to become large. (This is also true of internal consecutive calculations that are cumulative and may become large. Screw
38 Power Supply (fx-95MS only)
Users of...
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