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 rabbid on November 2nd, 2014
Calculation Of Error Function
how to calculate error function erf(x)and erfc(x) using casio 991MS
Current Answers
Answer #1: Posted by TommyKervz on November 2nd, 2014 12:30 PM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,833
Member since:
January 10th, 2013 Points: 17,776,833
Please download and refer to the user guide below
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
... the following safety precautions before using this manual handy for a long time (fx-95MS/100MS/570MS). • Use only the type of small children. Keep this calculator. Safety Precautions
Be sure to...injury or material damage if ignored. Disposing of the Calculator
• Never dispose of fire and personal injury.
• The displays and illustrations (such as key markings) shown in this...
User Guide - Page 5
...fx-95MS/fx-100MS. A dead battery can cause slow display response, total failure of the display, and shortening of the calculator's...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 any claim of any other party. Moreover, CASIO...
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 Function...
User Guide - Page 9
... 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 more than three digits. Two-line Display
The two-line display makes it possible to the "User's Guide 2 (Additional Functions)" for the fx-95MS only. Users of other models should refer to view both...
User Guide - Page 10
... the initial defaults shown below, press A B 2(Mode) =.
Example: Equation
Calculations
EQN
Note!
• To return the calculation mode and setup to 79 steps for a single calculation. k Input Capacity
• The memory area used to change the calculator setup.
• In this manual, the name of the display. • Be sure to input more than 79 steps...
User Guide - Page 11
... cursor is cleared by pressing A B 2 (or 3) =. When you change to an insert cursor t.
k Replay Function
• Every time you last performed. Pressing the [ key displays the formula and result of the calculation you perform a calculation, the replay function stores the calculation formula and its result in replay memory. Pressing [ again back steps sequentially (new-to-old...
User Guide - Page 13
Disp
1
• Display the selection screen. 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 F 1 • Negative values inside...
User Guide - Page 15
Disp
1
• Display the selection screen. fx-95MS:
1
Other Models: 1 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 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...
User Guide - Page 16
... 5: To discount the sum of 1500 (180) 1500 - 12 A v
• Example 2: To calculate what is selected. How about to use *the current Answer
Memory value in a mark up /discount calculation. • An error occurs if you try to input a mixed fraction while the d/c display format is the percentage
increase in the mark up or discount...
User Guide - Page 19
... memory is currently stored in Answer Memory.
• The result of a calculation can also be used with a subsequent Type A function (x2, x3, x-1, x!, DRG'), +, -, ^(xy), x , ҂...above key operations results in an error.
k Consecutive Calculations
• You can use the calculation result that pressing an operator key while a result is currently on the display (and also stored in Answer...
User Guide - Page 20
...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 calculations...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 reach the angle unit setup screen...
User Guide - Page 22
...; 302 ҃ 1023
123 + 30 K =
• Example 5: 123 ҃ 1728
12 N * =
* A N in a group of fx-570MS/fx-991MS.
• Example 6: 1 ҃ 12
1 3
ȕ
1 4
R 3 a , 4 a T a =
• Example 7: 8! ...Example 10: To determine how many different 4-digit
values can be produced using the numbers 1 through 7
• Numbers cannot be duplicated within the same 4-digit
value (1234 is...
User Guide - Page 23
... the value of y.
• Example 2: To convert rectangular coordinates (1, 3) 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 r, or 0 o to display the value of fx-100MS/fx-115MS/fx-570MS/ fx-991MS.
k Angle Unit Conversion • Press A v to polar coordinates (r,...
User Guide - Page 24
... 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 an equation. Element value 22
Coefficient name
a? Arrow indicates
direction you
should scroll to three unknowns. k Engineering Notation Calculations
• Example 1: To convert 56,088 meters to kilometers
→...
User Guide - Page 35
...; Cause
• The capacity of the numeric stack or operator stack is outside the allowable calculation range.
• An attempt to perform a function calculation using . Arg ERROR • Cause
• Improper use of the error and make sure they are using a value that exceeds the allowable input range.
• An attempt to values in any memory areas you...
User Guide - Page 36
... • Action • Press e or r to display the location of the cause of precedence.
1 Coordinate transformation: Pol (x, y), Rec (r, θ) Differentials: d/dx* Integrations: ∫dx* Normal distribution: P(*, Q(*, R(*
2 Type A functions: With these functions, the function key is pressed and then the value is pressed. k Order of Operations
Calculations are performed in front of Type...
User Guide - Page 37
..., the negative number must be enclosed within parentheses. A stack error (Stack ERROR) occurs whenever you try to perform a calculation that is so complex that is required when the calculation includes a high-priority Type A function, or power or root operations. Example: ( -2)4 = 16
-24 = -16
k Stacks
This calculator uses memory areas, called "stacks," to temporarily store values (numeric...
User Guide - Page 40
...To replace the battery
1 Press A i to the "User's Guide 2 (Additional Functions)."
Replace the battery as soon as possible when display figures become dim.
Screw
38
* 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.) Errors are cumulative and may become large.
User Guide - Page 41
... model name) apply to the same model.
Owners of the fx-912MS should refer to the description of other models should refer to the "User's Guide 2 (Additional Functions)." Power Supply: Single AA-size battery (R6P (SUM-3))
Battery Life:
Approximately 17,000 hours continuous display of flashing cursor.
When this happens, press 5 to 104...
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