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 jpocpo on July 27th, 2014
How To Convert Rectangular To Polar On Calculator Casio 991ms
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Current Answers
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 3
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 ... illustration, slide the unit out of the cover. • Always slide the keyboard end of the unit into the cover
first. Never slide the display end of the unit into the cover.
.....1
.....2
1
User Guide - Page 4
... a long time (fx-95MS/100MS/570MS). • Use only the type of battery specified for this calculator in this calculator. Keep this manual.
Doing so can result in a safe place where it . Caution
This symbol is used to suddenly burst, creating the risk of fire and personal injury.
• The displays and illustrations (such...
User Guide - Page 5
...party. Very low temperatures can cause slow display response, total failure of the display, and shortening of this , it ...CASIO Computer Co., Ltd. Handling Precautions
• 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...
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
... time.
• The upper line shows the calculation formula. • The lower line shows the result. Two-line Display
The two-line display makes it possible to the "User's Guide 2 (Additional Functions)" for the fx-95MS only.
Before getting started... fx-95MS Modes
To perform this type of calculation:
Perform this To enter key operation: this...
User Guide - Page 10
... let you know memory is indicated in the upper part of any calculation, the cursor changes from "_" to "k" to input more than twice displays additional setup screens. See "Answer Memory" for a single calculation. One step is taken up to perform the calculations being described is running low. Whenever you input the 73rd step of...
User Guide - Page 11
... input at the location where the error occurred.
9 k Replay Function
• Every time you last performed. k Error Locator
• Pressing r or e after an error occurs displays the calculation with the cursor positioned at the insert cursor position.
• Pressing A K, or = returns to the editing screen.
• Pressing the e or r key immediately after...
User Guide - Page 12
sults using exponential notation. k Exponential Display Formats
This calculator can select between two formats that determine ...is used. • To change the exponential display format, press the F
key a number of the examples in this manual show calculation re- In the case of two or more smaller expressions, which are automatically displayed using the Norm 1 format.
10
u Norm ...
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 want to initialize the calculation mode and setup, and clear replay memory and variables.
sin -1.23 → S R D 1.23 T
11
k Decimal Point and Separator Symbols
You...
User Guide - Page 14
...҃ 80 5 - 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 always decimal. k Fraction Operations uFraction Calculations
• Values are displayed in decimal format automatically whenever the total number of digits of a fractional value...
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...
User Guide - Page 16
This is because the calculation performed when v is pressed stores a result to Answer Memory before the , key is ... variable and then use *the current Answer
Memory value in a mark up or discount calculation, you try to input a mixed fraction while the d/c display format is selected.
k Percentage Calculations
• Example 1 : To calculate 12% of 168, 98, and 734 by 25% (2625) 3500 - 25 A...
User Guide - Page 17
...; 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 format, press the...
User Guide - Page 18
... contents are also updated with two significant digits (Sci 2)
F..... 2(Sci) 2 1 \ 3 =
SCI
3.3-01
• Press F ..... 3(Norm) 1 to clear the Fix specification.
• Example 2: 1 Ö 3, displaying result with result whenever you press = after inputting values or an ex-
Memory Calculations COMP
Use the F key to enter the COMP Mode when you want to perform...
User Guide - Page 20
...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 enter the COMP Mode when you want 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...
User Guide - Page 23
... 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,) (Rad)
r ҃...
User Guide - Page 24
...56088 = J
• Example 2: To convert 0.08125 grams to milligrams
→ 81.25 ҂10 -3 (mg)
0.08125 = J
Equation
EQN
Calculations
The EQN Mode lets you solve equations up...Arrow indicates
direction you want to
0.
Element value 22 Coefficient name
a?
EQN F F 1 (fx-95MS) F F F 1 (Other Models)
k Quadratic and Cubic Equations
Quadratic Equation: ax2 + bx + c =...
User Guide - Page 25
...cannot input complex numbers for the equation.
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 coefficients.
Calculation starts and one of a solution.
23
x + 2 = 0 (x = 2, -1, 1)
(Degree?) 3
(a?)
1 =
(b?)
D 2 =
(c?)
D 1 =
(d?)
2 =
(x1 = 2) ]
(x2 = -1) ]
(x3 = 1)
• If...
User Guide - Page 37
... that is
a negative number, the negative number must be enclosed within parentheses.
* fx-100MS/fx-115MS/fx-570MS/fx-991MS only. ** fx-570MS/fx-991MS only. • Operations of the matrix stack. exIn 120 → ex{In( 120)} • Other operations are performed first. • When a calculation contains an argument that the capacity of a stack is exceeded. • Matrix...
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