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 Jbl1uncles on March 9th, 2014
How To Solve Equation Of Two Variables On Casio 991 Ms Calculator
The person who posted this question about this Casio product did not include a detailed explanation. Please use the "Request More Information" button to the right if more details would help you to answer this question.
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
... battery's positive k and negative l ends are facing correctly when 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.
• The displays and illustrations (such as key markings) shown in personal injury or material damage if ignored. Safety...
User Guide - Page 5
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, or at least once every two years for special, collateral, incidental, or consequential damages in...
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 8
... 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 Information 32
kWhen you have a problem 32 kError Messages 32 kOrder of...
User Guide - Page 9
A separator symbol is displayed every three digits when the integer part of equations
F F 1 EQN
7 Users of other models should refer to view both the calculation formula and its result at the same time.
• The upper line shows the calculation formula. • The lower line shows the result.
Before getting started... fx-95MS Modes
To perform...
User Guide - Page 10
...can use in a subsequent calculation. Calculation Mode: Angle Unit: Exponential Display Format: Fraction Display Format: Decimal Point Character:...calculations being described is indicated in the upper part of any calculation, the cursor changes from "_" to "k" to the initial defaults shown below, press A B 2(Mode) =. Example: Equation
Calculations
EQN
Note!
• To return the calculation...
User Guide - Page 13
... within parentheses. Disp
1
• Display the selection screen. k Decimal Point and Separator Symbols
You can use .
1(Dot): Period decimal point, comma separator 2(Comma): Comma decimal point, period separator
k Initializing the Calculator
• Perform the following key operation when you
want to initialize the calculation mode and setup, and clear replay memory and variables.
User Guide - Page 16
... you need to assign the Answer Memory value into a 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 increased from 40 to 46? This is because the calculation performed when v is pressed stores a result to Answer Memory...
User Guide - Page 19
... stored in Answer Memory.
• The result of a calculation can use the calculation result that is currently on the display (and also stored in an error. • You can recall Answer Memory contents by any of the above key operations results in Answer Memory) as variable M.
• To clear independent memory (M), input 0 A j 3 (M+).
• Example...
User Guide - Page 20
... to appear on the display before starting the next calculation.
• π...variables. This operation deletes the data assigned to variable A. • Perform the following key operation when you reach the angle unit setup screen shown below. 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...
User Guide - Page 23
.../fx-570MS/
fx-991MS.
θ ҃ 1.047197551
0 o
• Press 0 n to display the value of .
21 D R G
1 2 3
• Pressing 1, 2, or 3 converts the displayed value to the corresponding angle unit.
• Example: To convert 4.25 radians to degrees
q ..... 1(Deg)
4.25 A v 2(R) =
4 . 25r
243.5070629
k Coordinate Conversion (Pol (x, y), Rec (r, θ ))
• Calculation...
User Guide - Page 24
view other elements. EQN F F 1 (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. Coefficient name
a?
Element value 22
k Engineering Notation Calculations
• Example 1: To convert 56,088 meters to ...
User Guide - Page 25
.... This is a complex number, the real part of the solutions for coefficients.
• 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 26
...specify 2 or 3 as the number of the coefficients. x1=
D
R⇔I
0.25
x1=
A r
D
R⇔I
0.75 i
• Example 2: To solve the equation 8x2 - 4x + 5 = 0 (x = 0.25 ± 0.75 i)
(Degree?) (a?) (b?) (c?) (x1 = 0.25 + 0.75i) (x2 = 0.25 - 0.75i)
2
8 = D 4 = 5 = ]
k Simultaneous Equations
Simultaneous Linear Equations with Two Unknowns: a1x + b1y = c1 a2x + b2y = c2
Simultaneous Linear...
User Guide - Page 27
... input complex numbers for coefficients.
Calculation starts and one of the solutions for the equation. view other solutions. Solution
Press... as soon as you input a value for the final coefficient.
Variable name
x=
Arrow indicates
direction you
should scroll to the coefficient input screen.
• Example: To solve the following simultaneous equations 2x + 3y - z = 15 3x - 2y + 2z...
User Guide - Page 32
.... Finally, calculate the coefficient of... the regression formula terms and correlation coefficient for linear regression is indicated on the display (n value).
15 P 1005 S
20 P1010 S 25 P 1011 S 30... r = 0.982607368
A X r r 3 =
Atmospheric Pressure at 1000 hPa.
Next, use variables. Temperature
Temperature
10°C 15°C 20°C 25°C 30°C
Atmospheric Pressure
1003...
User Guide - Page 36
....
• Action • Press e or r to display the location of the cause of π, e (natu- ral logarithm base), memory name, or variable name:
2π, 3e, 5A, πA, etc.
...6 Type B functions: With these functions, the value is entered and then the function key is pressed. k Order of Operations
Calculations are performed in ...
User Guide - Page 37
...; 5҂
6 7ѿ
35
A stack error (Stack ERROR) occurs whenever you try to their precedence during calculations. The negative sign (-) is treated as a Type B function, so particular care 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.
Similar Questions
How To Convert Polar To Rectangular Using Scientific Calculator Fx-991ms
(Posted by tasosjulianj 9 years ago)
How To Solve Exponential Notation With Casio Calculator Fx-115es Plus
(Posted by ricchunkygb 10 years ago)
How To Calculate Mean Median And Mode On Casio Fx 991 Ms Calculator
(Posted by GeBra 10 years ago)
Switching On The Casio Fx 991 Ms Calculator
(Posted by srinivasanyogaraj 11 years ago)
How To Solve Cubic Equation Using Fx-991 Ms Calculator? Pl. Help
(Posted by nvram2001 12 years ago)