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 eddiePha on July 22nd, 2014
How To Find Log Base 10 In Fx991-ms
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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 5
... 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...for the fx-95MS/fx-100MS. A dead battery can cause memory contents to temperature extremes. Heat can cause slow display response, total failure of the display, and shortening of the calculator's case...
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
... for information about modes and their selection. 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 more than three digits. Two-line Display
The two-line display makes it possible to the "User...
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 insert cursor position.
• Pressing A K, or = returns...
User Guide - Page 12
...with more than 10 digits and decimal values with more than nine decimal places. • All of the examples in this manual show calculation re-
sults...
= Ans×4 20. F i x Sc i No r m
1 23
• Press 3.
k Exponential Display Formats
This calculator can select between two formats that determine at what point exponential notation is used for integer values with more than two ...
User Guide - Page 14
...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 (integer + numerator + denominator + separator marks) exceeds 10.
• Example 1: 2 ѿ 1 ҃ 13 3 5 15 2 C 3 + 1 C 5 =
13 15.00
•
Example 2: 3
1 4
ѿ...
User Guide - Page 20
...Press the number key (1, 2, or 3) that corresponds to appear on the display before starting the next calculation.
• π = 3.14159265359
k Trigonometric/Inverse Trigonometric Functions
•...҃ 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 use. (90° = π radians ...
User Guide - Page 21
...k Hyperbolic/Inverse Hyperbolic Functions
• Example 1: sinh 3.6 ҃ 18.28545536 M S 3.6 =
• Example 2: sinhҀ1 30 ҃ 4.094622224 M A j 30 =
k Common and Natural Logarithms/ Antilogarithms
• Example 1: log 1.23 ҃ 0.089905111
R 1.23 =
• Example 2: In 90 (= loge 90) = 4.49980967 T 90 =
ln e ҃ 1
T p P =
• Example 3: e10 ҃ 22026.46579...
User Guide - Page 22
... the case of 10 individuals (210)
10 n* 4 =
20 L 5 =
• Example 2: 3 5 ѿ 3 ȕ27 ҃ -1.290024053
A D 5 + A D R D 27 T =
•
Example 3: 7
123
1
( = 1237 ) ҃ 1.988647795
7 A H 123 =
• Example 4: 123 ѿ 302 ҃ 1023
123 + 30 K =
• Example 5: 123 ҃ 1728
12 N * =
* A N in a group of fx-570MS/fx-991MS.
• Example 6: 1 ҃...
User Guide - Page 23
... rectangular coordinates (1, 3) to polar coordinates (r,) (Rad)
r ҃ 2
f* 1 P L 3 T =
* A f in the case of .
21
* 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...
User Guide - Page 24
...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... 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 to three degrees and ...
User Guide - Page 29
...displayed data, if you want to perform some other operation (calculation, recall
of statistical calculation results, etc.), you should always press the t key first to exit data display...Input the new value and then press the = key to display the screen shown below. To input the data 110 ten ... (Freq).
• You can delete a data value displayed using A G to specify the data frequency (number of...
User Guide - Page 30
..., Quad)
Regression Calculations
REG
Use the F key to enter the REG Mode when you just input, without registering the value you just input. L i n Log Ex p
1 23
re
Pw r I nv Quad
1 23
• Press the number key (1, 2, or 3) that corresponds to the type of regression you will not be unable to display or edit...
User Guide - Page 32
...1(Lin)
A B 1 (Scl) = (Stat clear)
REG
10 P1003 S n=
1. Temperature
Temperature
10°C 15°C 20°C 25°C 30°C...display (n value).
15 P 1005 S
20 P1010 S 25 P 1011 S 30 P 1014 S
Regression Coefficient A = 997.4
A X r r 1 =
Regression Coefficient B = 0.56
A X r r 2 =
Correlation Coefficient r = 0.982607368
A X r r 3 =
Atmospheric Pressure at 1000 hPa. Finally, calculate...
User Guide - Page 35
... use of the error and make sure they are using a value that exceeds the allowable input range.
• An attempt to display the calculation and correct the problem. The numeric stack has 10 levels and the operator stack has 24 levels. • Divide your input values and make required corrections.
Math ERROR •...
User Guide - Page 36
...log, In, ex, 10x, sin, cos, tan, sinҀ1, cosҀ1, tanҀ1, sinh, cosh, tanh, sinhҀ1, coshҀ1, tanhҀ1, (Ҁ) d*, h*, b*, o*, Neg*, Not*, Det**, Trn**, arg*, Abs*, Conjg*
7 Abbreviated multiplication format in front of π, e (natu- k Order of Operations
Calculations...; Action • Press e or r to display the location of the cause of precedence.
1 Coordinate...
User Guide - Page 37
... number, the negative number must be enclosed within parentheses. The numeric stack has 10 levels and the command stack has 24 levels. * fx-100MS/fx-115MS/fx-570MS/fx-991MS only. ** fx-570MS/fx-991MS only. • Operations of the same precedence are performed first. • When a calculation contains an argument that the capacity of a stack is exceeded. • Matrix...
User Guide - Page 39
...;0: -1҂10100ylogx100
x҃0: yŒ0 x0: y҃n,
1 2n+1
(n is an integer)
However: -1҂10100 1/x logȊyȊ100
Total of integer, numerator, and denominator
ab/c must be 10 digits or less (including division
marks). n is an integer)
However: -1҂10100 ylogȊxȊ100
yŒ...
User Guide - Page 40
...display, calculation error is ±1 at the last significant digit.) Errors are cumulative in the case of consecutive calculations, which can result in improper operation. This calculator is low.
To replace the battery
1 Press A i to turn power on the display... calculations that are cumulative and may become dim. Screw
38 Power Supply (fx-95MS only)
Users of the calculator...
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