Casio | FX-95 | User`s guide | Casio FX-95 User`s guide

fx-95MS fx-500MS
User’s Guide
8. Adjusting Display Contrast
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1. Important Information
• The displays and illustrations (such as key markings) shown in
this User’s Guide are for illustrative purposes only, and may differ
somewhat from the actual items they represent.
• The contents of this manual are subject to change without notice.
• In no event shall CASIO Computer Co., Ltd. be liable to anyone
for special, collateral, incidental, or consequential damages in
connection with or arising out of the purchase or use of this product
and items that come with it. Moreover, CASIO Computer Co., Ltd.
shall not be liable for any claim of any kind whatsoever by any other
party arising out of the use of this product and the items that come
with it.
• Be sure to keep all user documentation handy for future reference.
2. Sample Operations
Sample operations in this manual are indicated by a
icon. Unless
specifically stated, all sample operations assume that the calculator
is in its initial default setup.
3. Initializing the Calculator
Perform the following procedure when you want to initialize the
calculator and return the calculation mode and setup to their initial
default settings. Note that this operation also clears all data currently
in calculator memory.
4. Safety Precautions
• Keep batteries out of the reach of small children.
• Use only the type of battery specified for this calculator in this
5. Handling Precautions
• Dim figures on the display of the calculator indicate that battery
power is low. Continued use of the calculator when the battery
is low can result in improper operation. Replace the battery
as soon as possible when display figures becomes dim. Even
if the calculator is operating normally, replace the battery at
least once every two years. A dead battery can leak, causing
damage to and malfunction of the calculator. Never leave a
dead battery in the calculator.
• The battery that comes with the calculator discharges slightly
during shipment and storage. Because of this, it may require
replacement sooner than the normal expected battery life.
• Do not use an oxyride battery* or any other type of nickel-based
primary battery with this product. Incompatibility between
such batteries and product specifications can result in shorter
battery life and product malfunction.
• Avoid use and storage of the calculator in areas subjected to
temperature extremes, and large amounts of humidity and dust.
• Do not subject the calculator to excessive impact, pressure,
or bending.
• Never try to take the calculator apart.
• Use a soft, dry cloth to clean the exterior of the calculator.
• Whenever discarding the calculator or batteries, be sure to
do so in accordance with the laws and regulations in your
particular area.
* Company and product names used in this manual may be registered
trademarks or trademarks of their respective owners.
6. Removing the Hard Case
Before using the calculator, slide
its hard case downwards to
remove it, and then affix the hard
case to the back of the calculator
as shown in the illustration
The following is the input format for a sexagesimal value: {degrees}
$ {minutes} $ {seconds} $.
Note: You must always input something for the degrees and minutes,
even if they are zero.
12. Inputting Expressions and Values
4 × sin30 × (30 + 10 × 3) = 120 v
4 *s 30 *( 30 + 10 * 3 )=
Note: • The memory area used for calculation input can hold 79
“steps”. One step is taken up each time you press a number key
or arithmetic operator key (+, -, *, /). A ! or a key
operation does not take up a step, so inputting !W(3'), for
example, takes up only one step. • Whenever you input the 73rd
step of any calculation, the cursor changes from “_” to “k” to let you
know memory is running low.
1. Press the , key a number of times until
you reach the setup screen shown to the
2. Press c.
3. Use d and e to adjust contrast.
4. After the setting is the way you want, press A.
Press O to turn on the calculator.
Press 1A(OFF) to turn off the calculator.
Auto Power Off
Your calculator will turn off automatically if you do not perform any
operation for about 10 minutes.
CASIO Worldwide Education Website
k Degree, Minute, Second (Sexagesimal)
Fraction Display Format: a b/c
Decimal Point Character: Dot
7. Turning Power On and Off
Important: If adjusting display contrast does not improve display
readability, it probably means that battery power is low. Replace
the battery.
9. Reading the Display
The display of the calculator shows expressions you input, calculation
results, and various indicators.
Input expression
Calculation result
k Calculation Priority Sequence
When the priority of two expressions is the same, the calculation is
performed from left to right.
Function with parentheses: Pol(x, y), Rec(r, )
Type A functions: With these functions, the value is
entered and then the function key is pressed. (x3, x2, x−1,
x!, ° ’ ”, m, m1, m2, n, °, r, g)
Powers and roots: ^(xy), x'
Implied multiplication of π, e (natural logarithm base),
memory name, or variable name: 2π, 3e, 5A, πA, etc.
When you want to perform this type of
Perform this key
General calculations
Implied multiplication of Type B functions: 2'
3, Alog2, etc.
Permutation (nPr), combination (nCr)
Regression calculations
Multiplication, division (×, ÷)
Equation solution
10th Addition, subtraction (+, –)
Note: • The initial default calculation mode is the COMP Mode.
• Mode indicators appear in the upper part of the display. Be sure to
check the current calculation mode (COMP, SD, REG) and angle unit
setting (Deg, Rad, Gra) before beginning a calculation.
11. Configuring the Calculator Setup
Pressing the , key more than once displays additional setup
screens. Underlined ( ___ ) settings are initial defaults.
1Deg 2Rad 3Gra Specifies degrees,
radians or grads as the angle unit for value
input and calculation result display.
Note: In this manual, the v symbol next to a sample operation
indicates degrees.
1Fix 2Sci 3Norm
Specifies the
number of digits for display of a calculation
Fix: The value you specify (from 0 to 9) controls the number of decimal
places for displayed calculation results. Calculation results are
rounded off to the specified digit before being displayed.
Example: 100 ÷ 7 = 14.286 (Fix 3)
Sci: The value you specify (from 1 to 10) controls the number of
significant digits for displayed calculation results. Calculation results
are rounded off to the specified digit before being displayed.
Example: 1 ÷ 7 = 1.4286 × 10–1 (Sci 5)
Norm: Selecting one of the two available settings (Norm 1, Norm
2) determines the range in which results will be displayed in nonexponential format. Outside the specified range, results are displayed
using exponential format.
Norm 1: 10–2 |x|, |x| 1010 Norm 2: 10–9 |x|, |x| 1010
Example: 1 ÷ 200 = 5 × 10–3 (Norm 1); 0.005 (Norm 2)
a+b i
1a+bi 2r∠ (EQN Mode only) Specifies either rectangular
coordinates ( a + bi ) or polar coordinates ( r ∠ ) for EQN Mode
solutions. The “r∠” indicator is displayed while polar coordinates
(r∠) are selected.
1ab/c 2 d/c Specifies either mixed fraction (ab/c) or improper
fraction (d/c) for display of fractions in calculation results.
1 Dot 2 Comma Specifies whether to display a dot or a
comma for the calculation result decimal point. A dot is always
displayed during input.
Dot: Period decimal point, comma separator
Comma: Comma decimal point, period separator
k Initializing Calculation Mode and Setup
To return the calculation mode and setup to the initial defaults shown
below, press O!N(CLR)2(Mode)=.
Calculation Mode: COMP
Angle Unit: Deg
Exponential Display Format: Norm 1
k Making Corrections During Input
• Use d and e to move the cursor to the location you want.
• Press D to delete the number or function at the current cursor
• Press !D(INS) to change to an insert cursor t. Inputting
something while the insert cursor is on the display inserts the input
at the insert cursor position.
• Pressing !D(INS), or = returns to the normal cursor from the
insert cursor.
13. Basic Calculations
k Using Engineering Notation
Transform the value 1234 to engineering notation, shifting the
decimal point to the right.
1234 =W 1.234×103
W 1234.×100
To recall the contents of M
(Continuing) tl(M)
k Clearing the Contents of All Memories
Independent memory and variable contents are retained even if you
press A, change the calculation mode, or turn off the calculator.
Perform the following procedure when you want to clear the contents
of all memories.
14. Function Calculations
π : π is displayed as 3.141592654, but π = 3.14159265358980 is
used for internal calculations.
e: e is displayed as 2.718281828, but e = 2.71828182845904 is
used for internal calculations.
sin, cos, tan, sin−1, cos−1, tan−1 : Trigonometric functions. Specify
the angle unit before performing calculations. See 1 .
sinh, cosh, tanh, sinh−1, cosh−1, tanh−1 : Hyperbolic functions. The
angle unit setting does not affect calculations. See 2 .
°, r, g : These functions specify the angle unit. ° specifies degrees,
radians, and g grads. Input a function from the menu that appears
when you perform the following key operation: 1G(DRG').
See 3 .
10x, ex : Exponential functions. See
k Calculation History
2+2=4 3+3=6
1+1= 2+2= 3+3=
(Scrolls back.) f
(Scrolls back again.) f
k Replay
While a calculation result is on the display, you can press d or e
to edit the expression you used for the previous calculation.
ln : Natural logarithm to base e. See 6 .
x2, x3, ^(xy), ', 3', x', x−1 : Powers, power roots, and
reciprocals. See
Note: Calculation history data is all cleared whenever you press O,
when you change to a different calculation mode, or whenever you
initialize modes and settings.
4 × 3 + 2.5 = 14.5
4 * 3 + 2.5 =
4 × 3 − 7.1 = 4.9
(Continuing) dYYYY- 7.1 =
log : Logarithmic function. See
Pol, Rec : Pol converts rectangular coordinates to polar coordinates,
while Rec converts polar coordinates to rectangular coordinates.
See 8 .
Specify the angle unit
Pol(x, y) = (r, )
Rec(r, ) = (x, y)
before performing
Calculation result θ is
displayed in the range
of −180° θ 180°.
Coordinates (Rec)
Coordinates (Pol)
x ! : Factorial function. See
Ran# : Generates a 3-digit pseudo random number that is less than
1. See 10.
nPr, nCr : Permutation (nPr) and combination (nCr) functions. See
k Fraction Calculations
Note: • Mixing fractions and decimal values in a calculation will cause
the result to be displayed as a decimal value. • Fractions in calculation
results are displayed after being reduced to their lowest terms.
To switch a calculation result between improper fraction and
mixed fraction format: Press 1$(d/c).
To switch a calculation result between fraction and decimal
format: Press $.
k Percent Calculations
150 × 20% = 30
3 + 3 Sr(:) 3 * 3 =
To subtract the result of 10 + 5 from M
(Continuing) 10 + 5 1l(M–)
Note: Variable M is used for independent memory.
You can use the colon character (:) to connect two or more
expressions and execute them in sequence from left to right when
you press =.
In the COMP Mode, the calculator remembers up to approximately
150 bytes of data for the newest calculation. You can scroll through
calculation history contents using f and c.
• The negative sign (–) is treated as a Type B function, so particular
care is required when the calculation includes a high-priority Type
A function, or power or root operations.
Example: (–2)4 = 16; –24 = –16
2+1 = 1
3 2
k Multi-Statements
A simple key operation transforms a displayed value to engineering
Type B functions: With these functions, the function key is
pressed and then the value is entered. (', 3', log, ln,
ex, 10x, sin, cos, tan, sin−1, cos−1, tan−1, sinh, cosh, tanh,
sinh−1, cosh−1, tanh−1, (−))
Standard deviation
Convert 2°15´18˝ to its decimal equivalent.
2 $ 15 $ 18 $=$
(Converts decimal to sexagesimal.) !$(←) 2°15°18.
10. Specifying the Calculation Mode
2°20´30˝ + 39´30˝ = 3°00´00˝
2 $ 20 $ 30 $+ 0 $ 39 $ 30 $=
To add the result of 10 × 5 to M
(Continuing) 10 * 5 l
150 * 20 1=(%)
Calculate what percentage of 880 is 660. (75%)
660 / 880 1=(%)
Increase 2500 by 15%. (2875)
2500 * 15 1=(%)+
Discount 3500 by 25%. (2625)
3500 * 25 1=(%)-
k Answer Memory (Ans)
The last calculation result obtained is stored in Ans (answer) memory.
Ans memory contents are updated whenever a new calculation result
is displayed. In addition to =, Ans memory contents are also updated
with result whenever you press !=(%), m, !m(M–), or
!~(STO) followed by a letter (A through F, or M, X, or Y).
To divide the result of 3 × 4 by 30
(Continuing) / 30 =
123 + 456 = 579
789 – 579 = 210
123 + 456 =
(Continuing) 789 -G=
Rnd : The argument of this function is made a decimal value and
then rounded in accordance with the current number of display digits
setting (Norm, Fix, or Sci). With Norm 1 or Norm 2, the argument is
rounded off to 10 digits. See 12.
Note: Using functions can slow down a calculation, which may delay
display of the result. To interrupt an ongoing calculation before its
result appears, press A.
k Examples
Discount the sum of 168, 98, and 734 by 20%. (800)
168 + 98 + 734 =G1~(STO)-(A)
a-(A)** 20 1=(%)800.
* As shown here, if you want to use the current Ans (answer) memory
value in a mark up or discount calculation, you need to assign the
Ans memory value into a variable and then use the variable in the
mark up/discount calculation.
300 grams are added to a test sample originally weighing
500 grams, producing a final test sample of 800 grams. What
percent of 500 grams is 800 grams? (160%)
What is the percentage change when a value is increased
from 40 to 46? (15%)
k Variables (A, B, C, D, E, F, X, Y)
s 30 =
1s(sin−1) 0.5 =
sinh 1 = 1.175201194
cosh–1 1 = 0
Your calculator has eight preset variables named A, B, C, D, E, F,
X, and Y.
To assign the result of 3 + 5 to variable A
3 + 5 1t(STO)y(A)
To multiply the contents of variable A by 10
(Continuing) Sy(A)* 10 =
To recall the contents of variable A
(Continuing) ty(A)
To clear the contents of variable A
0 1t(STO)y(A)
ws(sinh) 1 = 1.175201194
w1c(cosh−1) 1 =
3 π /2 radians = 90°, 50 grads = 45°
(1E(π)/ 2 )1G(DRG')c(R)=
50 1G(DRG')d(G)=
4 To calculate e5 × 2 to three significant digits (Sci 3)
5 log 1000 = 3
1i(ex) 5 * 2 = 2.97×102
l 1000 =
6 To calculate ln 90 (= loge 90) to three significant digits (Sci 3)
7 1.2 × 103 = 1200
k Independent Memory (M)
You can add calculation results to or subtract results from independent
memory. The “M” appears on the display when there is any value
other than zero stored in independent memory.
To clear the contents of M
0 1t(STO)l(M)
sin−10.5 = 30° v
1 sin 30°= 0.5
i 90 = 4.50×100
1.2 * 10 W=
(–52)3 = –15625
(- 5 x)M 3 = –15625.
51M(x') 32 =
32 = 2
To calculate '
2 = 4.242640687...) to three
2 × 3 (= 3'
decimal places (Fix 3)
N 1(Fix)3
8 To convert rectangular coordinates ('
2 ) to polar
coordinates v
r9 2 ,9 2 )=
r = 2.
= 45.
• Press ~c(E) to display the value of r, or ~t(F) to
display the value of .
To convert polar coordinates ('
2 , 45°) to rectangular
coordinates v
!r(Rec( )9 2 , 45 =
x = 1.
y = 1.
• Press ~c(E) to display the value of x, or ~t(F) to
display the value of y.
9 (5 + 3) ! = 40320
( 5 + 3 )1E(x!)=
10 To obtain two random three-digit integers
1000 1.(Ran#)=
(Actual results will differ.)
11 To determine the number of permutations and combinations
possible when selecting four people from a group of 10
10 1{(nPr) 4 =
10 {4 =
12 To perform the following calculations when Fix 3 is selected
for the number of display digits: 10 ÷ 3 × 3 and Rnd(10 ÷ 3)
10 / 3 * 3 =
10 / 3 =10(Rnd)* 3 =
15. Statistical Calculations (SD, REG)
• Entering the REG Mode and selecting a regression type (Lin, Log,
Exp, Pwr, Inv, Quad) clear variables A through F, X, and Y.
• Do not use variables A through F, X, or Y to store data when
performing statistical calculations.
k Obtaining Statistical Values from Input Data
Supported statistical variables and the keys you should press to recall
them are shown below. For single-variable statistical calculations, the
variables marked with an asterisk (*) are available.
Sum: Σx2*, Σx*, Σy2, Σy, Σxy, Σx3, Σx2y, Σx4, Number of Items: n*
Σx2, Σx, n ........... !b(S-SUM) b to d
Σy2, Σy, Σxy ........ !b(S-SUM)e b to d
Σx3, Σx2y, Σx4 ..... !b(S-SUM)ee b to d (Quadratic
Regression only)
Mean: o*, p, Population Standard Deviation: σx*, σy, Sample
Standard Deviation: sx*, sy
o, σx , sx .............. !c(S-VAR) b to d
p, σy, sy ............... !c(S-VAR)e b to d
Regression Coefficients: A, B, Correlation Coefficient: r
Regression Coefficients for Quadratic Regression: A, B, C
!c(S-VAR)ee b to d
Estimated Values: m, n
Estimated Values for Quadratic Regression: m1, m2, n
!c(S-VAR)eee b to c (or d)
• m, m1, m2 and n are not variables. They are commands of the type
that take an argument immediately before them. See “Calculating
Estimated Values” for more information.
1 To calculate the mean (o) and population standard
deviation (σx ) for the following data: 55, 54, 51, 55, 53, 53,
54, 52
55 7 54 7 51 7 55 7 53 77 54 7 52 7
!c(S-VAR)c(σx )= 1.316956719
To select this type of statistical calculation: Perform this
(Regression formula shown in parentheses) key operation:
Single-variable (X)
Paired-variable (X, Y), linear regression
( y = A + Bx) 1(Lin)
Paired-variable (X, Y), logarithmic regression ,3(REG)
( y = A + Blnx) 2(Log)
Paired-variable (X, Y), e exponential
( y = AeBx ) 3(Exp)
To calculate the linear regression and logarithmic
regression correlation coefficients (r) for the following
paired-variable data and determine the regression formula
for the strongest correlation: (x, y) = (20, 3150), (110, 7310),
(200, 8800), (290, 9310). Specify Fix 3 (three decimal
places) for results.
,3(REG)1(Lin) , 1(Fix)3
20, 3150 7 110 , 7310 7
200 , 8800 7 290 , 9310 7
Paired-variable (X, Y), inverse regression
( y = A + B/x) e2(Inv)
20 , 3150 7 110 , 7310 7
200 , 8800 7 290 , 9310 7
Paired-variable (X, Y), quadratic regression
( y = A + Bx + Cx2) e3(Quad)
Logarithmic Regression Formula:
y = –3857.984 + 2357.532lnx
Paired-variable (X, Y), power regression
( y = AxB) e1(Pwr)
k Inputting Data
• In the SD Mode and REG Mode, the l key operates as the 7
• Always start data input with !,(CLR)b(Scl)= to clear
statistical memory.
• Input data using the key sequence shown below.
SD Mode: <x-data> 7
REG Mode: <x-data> , <y-data> 7
• 77 inputs the same data twice.
• You can also input multiple entries of the same data using
k Data Input Precautions
• While inputting data or after inputting data is complete, you can use
the f and c keys to scroll through data you have input. If you
input multiple entries of the same data using !,(;) to specify
the data frequency (number of data items) as described above,
scrolling through data shows both the data item and a separate
screen for the data frequency (Freq).
• Input the new value and then press the = key to replace the old
value with the new one. This also means that if you want to perform
some other operation, you should always press the A key first to
exit data display.
• Pressing the 7 key instead of = after changing a value on the
display registers the value you input as a new data item, and leaves
the old value as it is.
• You can delete a data value displayed using f and c by pressing
!l(CL). Deleting a data value causes all values following it to
be shifted up.
• The message “Data Full” appears and you will not be able to input
any more data if there is no memory left for data storage. If this
happens, press the = key to display the screen shown below.
Press c to exit data input without registering
the value you just input.
Press b if you want to register the value
you just input. If you do this, however, you will not be able to display
or edit any of the data you have input.
• After inputting statistical data in the SD Mode or REG Mode, you
will be unable to display or edit individual data items any longer
after perform either the following operations: changing to another
mode; changing the regression type.
k Calculating Estimated Values
Based on the regression formula obtained by paired-variable
statistical calculation, the estimated value of y can be calculated for
a given x-value. The corresponding x-value (two values, x1 and x2, in
the case of quadratic regression) also can be calculated for a value
of y in the regression formula.
To determine the estimate value for x when y = –130 in the
regression formula produced by logarithmic regression of
the data in 2 . Specify Fix 3 for the result. (Perform the
following operation after completing the operations in 2 .)
(- 130 )12(S-VAR)eee1(m)=
Important: Regression coefficient, correlation coefficient, and
estimated value calculations can take considerable time when there
are a large number of data items.
• Any time until you input a value for the final coefficient (c for a
quadratic equation, d for a cubic equation), you can use the f
and c keys to move between coefficients on the screen and
make changes, if you want.
• Note that you cannot input complex numbers for coefficients.
Important: The following operations are not supported by the
Coefficient Editor: m, 1m(M–), 1t(STO). Pol, Rec, and
multi-statements also cannot be input with the Coefficient Editor.
4. After all the values are the way you want, press =.
• This will display a solution. Each press of = will display another
solution. Pressing = while the final solution is displayed will
return to the Coefficient Editor.
• You can scroll between the solutions using the c and f
• To return to the Coefficient Editor while any solution is displayed,
press A.
Note: Values cannot be converted to engineering notation on the
solution screen.
1 =- 1 = 1 = 2 =
1 = 1 =- 1 =0 =
-1=1=1= 4
Unk nowns?
2 3
Press this key:
Simultaneous linear equations with two
unknowns (anx + bny = cn)
Simultaneous linear equations with three
unknowns (anx + bny + cnz = dn)
Quadratic equation (ax2 + bx + c = 0)
Cubic equation (ax3 + bx2 + cx + d = 0)
3. Use the Coefficient Editor that appears to input coefficient values.
• To solve 2x2 + x – 3 = 0, for example, press e2 in step 2, and
then input the following for the coefficients (a = 2, b = 1, c = –3):
2 =1=- 3.
8x2 − 4x + 5 = 0 (x = 0.25 ± 0.75i)
8 =- 4 = 5 =
(x2=) −0.75i
• If a result is a complex number, the real part of the first solution
appears first. Press !=(Re⇔Im) to toggle the display between
the real part and imaginary part of a solution.
x3 – 2x2 – x + 2 = 0
1 =- 2 =- 1 = 2 =
17. Calculation Ranges, Number of
Digits, and Precision
k Calculation Range and Precision
Calculation Range: ±1 × 10–99 to ±9.999999999 × 1099 or 0
Number of Digits for Internal Calculation: 15 digits
Precision: In general, ±1 at the 10th digit for a single calculation.
Precision for exponential display is ±1 at the least significant digit.
Errors are cumulative in the case of consecutive calculations.
k Function Calculation Input Ranges and Precision
2 3
To select this calculation type:
Pol(x, y)
Input Range
0 |x| 9 × 109
0 |x| 157079632.7
0 |x| 1 × 1010
Same as sinx, except when 앚x앚 = (2n−1) ҂ 90.
Same as sinx, except when 앚x앚 = (2n−1) ҂ π/2.
Same as sinx, except when 앚x앚 = (2n−1) ҂ 100.
0 앚x앚 1
0 x 69 (x is an integer)
앚x앚, 앚y앚
9.999999999 ҂ 1099
°’ ”
The display seconds value is subject to an error of ±1
at the second decimal place.
앚x앚 쏝
1 ҂ 10100
Decimal ↔ Sexagesimal Conversions
0°0°0° 앚x앚 9999999°59°
a b/c
x 쏜 0: –1 ҂ 10100 쏝 ylogx 쏝 100
x = 0: y 쏜 0
x 쏝 0: y = n, 2n+1 (n is an integer)
However: –1 ҂ 10100 쏝 ylog앚x앚 쏝 100
y 쏜 0: x G 0, –1 ҂ 10100 쏝 1/x logy 쏝 100
y = 0: x 쏜 0
y 쏝 0: x = 2n+1, n1 (n G 0; n is an integer)
However: –1 ҂ 10100 쏝 1/x log앚y앚 쏝 100
20. Replacing the Battery
Important: Removing the battery will cause all of the calculator’s
memory contents to be deleted.
1. Press 1A(OFF) to turn off the Screw
2. Remove the cover as shown in
the illustration and replace the
battery, taking care that its plus
(+) and minus (–) ends are facing
3. Replace the cover.
4. Initialize the calculator. See “3.
Initializing the Calculator”.
• Do not skip the above step!
21. Specifications
Power Requirements: AA-size battery R6P (SUM-3) × 1
Approximate Battery Life: 17,000 hours (continuous display of
flashing cursor)
Power Consumption: 0.0001 W
Operating Temperature: 0°C to 40°C (32°F to 104°F)
Dimensions: 19.5 (H) × 78 (W) × 155 (D) mm
/4⬙ (H) × 31/16⬙ (W) × 61/8⬙ (D)
Approximate Weight: 130 g (4.6 oz) including battery
Total of integer, numerator, and denominator must be
10 digits or less (including division marks).
앚x앚 쏝
1 ҂ 1050; 앚y앚 쏝 1 ҂ 1050; 앚n앚 쏝 1 ҂ 10100
σx , σy, o, p : n G 0
sx , sy, A, B, r : n G 0, 1
• Precision is basically the same as that described under “Calculation
Range and Precision”, above.
• Calculations that use any of the functions or settings shown below
require consecutive internal calculations to be performed, which can
cause accumulation of error that occurs with each calculation.
y , 3', x!, nPr, nCr; °, r, g (angle unit: radians); σx , sx ,
^(xy), x'
regression coefficient.
• Error is cumulative and tends to be large in the vicinity of a function’s
singular point and inflection point.
• During statistical calculation, error is cumulative when data values
have a large number of digits and the differences between data
values is small. Error will be large when data values are greater
than six digits.
18. Error Messages
The calculator will display an error message whenever an error occurs
for any reason during a calculation.
• Press d or e to return to the calculation screen. The cursor will
be positioned at the location where the error occurred, ready for
input. Make the necessary corrections to the calculation and execute
it again.
• Press A to return to the calculation screen. Note that this also
clears the calculation that contained the error.
Cause: • The intermediate or final result of the calculation you
are performing exceeds the allowable calculation range. • Your
input exceeds the allowable input range. • The calculation you are
performing contains an illegal mathematical operation (such as
division by zero).
Action: • Check the input values and reduce the number of digits.
• When using independent memory or a variable as the argument of
a function, make sure that the memory or variable value is within the
allowable range for the function.
Cause: The calculation you are performing has caused the capacity
of the numeric stack or the command stack to be exceeded.
Action: • Simplify the calculation expression. • Try splitting the
calculation into two or more parts.
Syntax ERROR
Cause: There is a problem with the format of the calculation you
are performing.
Action: Make necessary corrections.
0 앚x앚 9.999999999 ҂ 1099
19. Before Assuming Malfunction of the
0 앚x앚 230.2585092
sinh x
0 앚x앚 4.999999999 ҂ 10
1 x 4.999999999 ҂ 1099
1 ҂ 10100
x2 + y2 9.999999999 ҂ 1099
0 r 9.999999999 ҂ 1099
Rec(r, )
: Same as sinx
앚a앚, b, c 쏝 1 ҂ 10100; 0 b, c
Element value
Deg r ee?
a1 ?
앚x앚 쏝
0 n 쏝 1 ҂ 1010, 0 r n (n, r are integers)
1 n!/r! 쏝 1 ҂ 10100 or 1 n!/(n–r)! 쏝 1 ҂ 10100
Arrow indicates direction you should
scroll to view other elements.
Coefficient name
1 ҂ 10100; x G 0
x – y + z = 2, x + y – z = 0, –x + y + z = 4
1 ҂ 1050
앚x앚 쏝
Press NN1(EQN) and then select an equation type from the
menu that appears. Changing the equation type causes the values
of all Coefficient Editor coefficients to change to zero.
k EQN Mode Calculation Examples
앚x앚 쏝
0 n 쏝 1 ҂ 1010, 0 r n (n, r are integers)
1 {n!/(n–r)!} 쏝 1 ҂ 10100
k Changing the Current Equation Type Setting
16. Equation Calculations (EQN)
The EQN Mode lets you solve equations up to three degrees and
simultaneous linear equations with up to three unknowns.
1. Press NN1(EQN) to enter the EQN Mode.
2. On the menu that appears, select an equation type.
x –1
0 앚x앚 9.999999999 ҂ 1099
0 앚x앚 9.999999999 ҂ 10–1
0 쏝 x 9.999999999 ҂ 1099
–9.999999999 ҂ 1099 x 99.99999999
–9.999999999 ҂ 1099 x 230.2585092
0 x 쏝 1 ҂ 10100
Perform the following steps whenever an error occurs during a
calculation or when calculation results are not what you expected.
Note that you should make separate copies of important data before
performing these steps.
1. Check the calculation expression to make sure that it does not
contain any errors.
2. Make sure that you are using the correct mode for the type of
calculation you are trying to perform.
3. If the above steps do not correct your problem, press the O key.
4. Initialize all modes and settings. See “Initializing Calculation Mode
and Setup”.
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