HP Hewlett Packard Calculator scientific calculator User Manual

hp 9s  
Ex. 7: Change 12385 to 789  
1. Key in 12385  
Mixed Arithmetic Calculations  
Trigonometric and Inverse Trigonometric Functions  
Before undertaking a trigonometric or inverse trigonometric  
calculation, make sure that the appropriate angular unit is set.  
DEG  
DEG  
789.  
123.  
Scientific Calculator  
DEG  
DEG  
ENTER  
1 [ + ] 2 [ × ] 3 [ ]  
1 + 2 × 3 = ?  
7.  
2. Press [ CE ] 789  
DEG  
÷
3.5 [ +/– ] [ + ] 8 [  
] 2  
ENTER  
]
3 sin 85° = ?  
3 [ × ] 85 [ sin ] [  
π
0.5  
2.99  
0.71  
÷
–3.5 + 8 2 = ?  
ENTER  
[
]
Ex. 8: Change 12385 to 123  
1. Key in 12385  
π
4
÷
ENTER  
] 4 [ ]  
[ 2ndF ] [  
[ cos ]  
] [  
RAD  
cos (  
rad) = ?  
General Operations  
Parentheses Calculations  
Operations inside parentheses are always executed first. You can  
specify up to 15 levels of parentheses in a single calculation. When  
you enter the first parenthesis, the ( ) indicator appears on the display  
and remains until each opening parenthesis has a corresponding  
closing parenthesis.  
GRAD  
DEG  
tan 150 grad = ?  
150 [ tan ]  
–1.00  
30.00  
Power Supply  
On or Off  
2. Press [ 00 0 ] twice.  
sin –1 0.5 = ? deg 0.5 [ 2ndF ] [ sin –1  
]
In a series of calculations, you can correct errors in intermediate  
results by pressing [ON/C]. This clears the calculation without clearing  
memory.  
To turn the calculator on, press [ON/C].  
1
cos –1  
? rad  
(
) =  
[ cos –1  
2 [  
] [ 2ndF ] [ x –1] [ 2ndF ]  
]
RAD  
0.79  
2
To turn the calculator off, press [2ndF] [OFF].  
If you press the wrong arithmetic operation key, just press [ CE ] and  
then the correct arithmetic key.  
Auto power-off function  
tan –1 1 = ? grad  
1 [ 2ndF ] [ tan –1  
]
GRAD  
DEG  
50.00  
( 5–2 × 1.5 ) × 3  
+ 0.8 × (– 4 )  
= ?  
2.8  
[ ( ] 5 [ – ] 2 [ × ] 1.5 [ ) ] [ × ] 3  
ENTER  
The calculator automatically turns off if it has not been used for  
approximately 9 minutes. Power can be restored by pressing the  
[ON/C] key again. Memory contents and the current mode setting  
(STAT, DEG, CPLX, Base-n,etc) are retained when you turn off the  
power and when the calculator automatically turns off.  
Exchange key  
[ + ] 0.8 [ × ] 4 [ +/– ] [  
]
Hyperbolic and Inverse hyperbolic functions  
→  
Pressing [ 2ndF ] [ X Y ] changes the currently displayed value to  
the previously displayed value.  
DEG  
cosh1.5+sinh1.5  
= ?  
1.5 [ HYP ] [ cos ] [ + ] 1.5  
ENTER  
DEG  
2 × ( 7 + 6 × ( 5 2 [ × ] [ ( ] 7 [ + ] 6 [ × ] [ ( ] 5  
ENTER  
122.  
4.48  
[ HYP ] [ sin ] [  
]
+ 4 )) = ?  
[ + ] 4 [  
]
sinh –1 7 = ?  
tanh 1 =?  
7 [ HYP ] [ 2ndF ] [ sin –1  
]
DEG  
DEG  
DEG  
ENTER  
123 [ + ] 456 [  
]
579.00  
456.00  
579.00  
2.64  
0.76  
ENTER  
].  
Note: It is not necessary to press [ ) ] before [  
Battery replacement  
DEG  
DEG  
123 + 456 = ?  
→  
[ 2ndF ] [ X Y ]  
1 [ HYP ] [ tan ]  
Repeating a Calculation  
The calculator is powered by two alkaline button batteries (GP76A or  
LR44). If the display becomes dim and difficult to read, the batteries  
should be replaced as soon as possible.  
→  
[ 2ndF ] [ X Y ]  
Rectangular and Polar coordinates  
You can repeat the last number entered, or the last operation  
ENTER  
executed, by pressing [  
].  
Accuracy and Capacity  
Rectangular Coordinates  
Polar Coordinates  
Accuracy: ±1 in the 10th digit.  
To replace the batteries:  
Repeating the last number  
DEG  
DEG  
DEG  
Capacity: In general, calculations can be displayed as a mantissa of  
up to 10 digits, a 10-digit mantissa together with a 2-digit exponent up  
to 10 ±99, or as an integer between –9999999999 and 9999999999.  
ENTER  
]
3 [ × ] [  
1. Slide the battery cover off and remove the old batteries.  
2. Insert new batteries, with positive polarity facing outward.  
3. Replace the battery cover and press [ON/C] to turn on the power.  
9.  
27.  
81.  
3 × 3 = ?  
3 × 3 × 3 = ?  
ENTER  
[
[
]
3 × 3 × 3 × 3 = ?  
ENTER  
]
Numbers used as input to a particular function must be within the  
allowable range for that function (as set out in the following table):  
Repeating the last arithmetic operation  
The keyboard  
Most of the keys can perform two functions.  
DEG  
DEG  
ENTER  
321 [ + ] 357 [  
321 + 357 = ?  
654 + 357 = ?  
]
678.  
ENTER  
654 [  
]
1011.  
Functions  
sin x, cos x, tan x  
Allowable input range  
< 4.5 × 10 10 deg  
< 2.5 × 10 8 π rad  
< 5 × 10 10 grad  
DEG  
DEG  
2nd function  
sin–1  
sin  
Deg:  
Rad:  
Grad:  
x
x
ENTER  
]
579 – 159 = ?  
456 – 159 = ?  
579 [ – ] 159 [  
ENTER  
420.  
297.  
a + b i = r (cosθ + i sinθ)  
――――――  
456 [  
]
Note: Before undertaking a coordinates conversion calculation, make  
sure that the appropriate angular unit is set.  
―――  
1st function  
x
DEG  
DEG  
DEG  
ENTER  
3 [ × ] 6 [ × ] 45 [  
1st functions  
]
810.  
414.  
900.  
18 × 45 = ?  
18 × 23 = ?  
Converting from Rectangular to Polar  
Also, for tan x:  
ENTER  
23 [  
]
These are functions that are executed when you press a key without  
first pressing [ 2ndF ]. The function performed is indicated by the label  
on the key.  
DEG  
18 × (0.5x102) = ?  
7.81  
5 [ a ] 6 [ b ] [ 2ndF ] [ R P ]  
If a = 5 and b = 6,  
Deg:  
Rad:  
x
x
90 (2n +1)  
ENTER  
0.5 [ EXP ] 2 [  
]
DEG  
θ
?
what are r and  
π
[ b ]  
50.19  
DEG  
DEG  
DEG  
(2n +1)  
÷
÷
÷
ENTER  
]
2
96  
75  
8 = ?  
8 = ?  
96 [  
75 [  
] 8 [  
12.  
9.375  
15.  
2nd functions  
Converting from Polar to Rectangular  
ENTER  
]
These are functions that are executed when you press a key after first  
pressing [ 2ndF ]. The function performed is indicated by the label  
above the key.  
Grad:  
x
100 (2n +1)  
25 [ a ] 56 [ b ] [ 2ndF ]  
[ P R ]  
θ
If r = 25 and  
=
DEG  
DEG  
(1.2x102)  
8 = ?  
13.98  
20.73  
÷
ENTER  
1.2 [ EXP ] 2 [  
]
56°, what are a  
and b?  
where n is an integer.  
[ b ]  
Percentage Calculations  
sin –1 x, cos –1  
tan –1  
x
x
x
x
x
x
1  
When you press [ 2ndF ], the 2ndF indicator appears in the display to  
indicate that you will be selecting the second function of the next key  
you press. If you press [ 2ndF ] by mistake, simply press [ 2ndF ]  
again to remove the 2ndF indicator.  
120 [ × ] 30 [ 2ndF ] [ % ]  
ENTER  
DEG  
DEG  
DEG  
Permutations and Combinations  
30% of 120 = ?  
70% of 120 = ?  
36.  
84.  
< 1 × 10 100  
230.2585092  
< 1 × 10 100  
< 5 × 10 99  
[
]
x
n!  
n!  
ENTER  
70 [ 2ndF ] [ % ] [  
]
nPr =  
nCr =  
(nr)!  
r !(n r)!  
sinh x, cosh x  
tanh x  
÷
88 is 55% of what 88 [  
] 55 [ 2ndF ] [ % ]  
ENTER  
]
Note: [ A ], [ B ], [ C ], [ D ], [ E ], [ F ] are 1st functions in HEX mode.  
160.  
How many  
number?  
30% mark up of  
120 = ?  
30% discount of  
120 = ?  
[
permutations of 4  
items can you  
select from a set  
of 7 items?  
120 [ + ] 30 [ 2ndF ] [ % ]  
ENTER  
Display Symbols  
The following symbols, shown on the display, indicate the status of  
the calculator.  
DEG  
DEG  
DEG  
DEG  
ENTER  
7 [ 2ndF ] [ nPr ] 4 [  
7 [ 2ndF ] [ nCr ] 4 [  
]
840.00  
35.00  
156.  
84.  
[
]
sinh –1  
x
120 [ – ] 30 [ 2ndF ] [ % ]  
ENTER  
cosh –1  
tanh –1  
x
1 x < 5 × 10 99  
< 1  
[
]
How many  
combinations of 4  
items can you  
select from a set  
of 7 items?  
Memory Calculations  
DEG or RAD or GRAD: degrees, radians or grads angular unit  
x
x
ENTER  
]
The M indicator appears when a number is stored in memory.  
Recalling from memory does not delete the contents of memory.  
The memory is not available when you are in statistics mode.  
M
E
A value is in memory  
Overflow or error  
Minus  
CPLX Complex number mode  
STAT Statistical mode  
log x, ln x  
1 × 10 –99 x < 1 x 10 100  
–1 × 10 100 x 100  
–1 × 10 100 x 230.2585092  
0 x < 1 × 10 100  
10 x  
e x  
2ndF  
[2ndF] key pressed  
Precision capability  
Process capability  
Deviation  
Sexagesimal  
You can convert a sexagesimal figure (degree, minute and second) to  
a decimal number by pressing [ ] and convert a decimal number  
Decimal form Conversions  
( )  
Parentheses calculation CP  
To copy the displayed number to memory, press [ X M ].  
BIN Binary mode  
OCT Octal mode  
CPK  
σ
To clear the memory, press [ 0 ] [ X M ], or [ CE ] [ X M ], in  
that order.  
x
to a sexagesimal figure by pressing [ 2ndF ] [  
].  
x 2  
x –1  
x
< 1 × 10 50  
x│<1 × 10 100, X0  
< 1 × 10 100  
HEX Hexadecimal mode  
USL  
LSL  
Setting upper limit  
Setting lower limit  
Sexagesimal figures are displayed as follows:  
ED  
Edit mode  
DEG  
0.  
15.  
8.  
12 45 
׀
 
30 
׀
 
׀
 
5
= 12 degrees, 45 minutes, 30.5  
seconds  
[ CE ] [ X M ]  
HYP Hyperbolic mode  
DEG  
3
3 [ × ] 5 [ M+ ]  
M
M
M
M
x
x
3 × 5  
Note: If the total number of digits in a DD, MM and SS.SS figure  
exceeds 8, the figure is truncated.  
DEG  
DEG  
DEG  
DEG  
÷
56 [  
] 7 [ M+ ]  
÷
+ 56  
7
Display Formats  
The calculator can display numbers in four formats: floating point,  
fixed point, scientific, and engineering.  
0
x
69, where x is an integer.  
X !  
+ 74 – 8 × 7  
Total = ?  
74 [ – ] 8 [ × ] 7 [ M+ ]  
[ MR ]  
18.  
41.  
0.  
Converting from Sexagesimal to Decimal  
1 × 10 100  
R
P
2
2
x
+ y  
12 deg., 45 min.,  
30.5 sec.= ?  
12 [  
[
] 45 [  
] 30.5  
DEG  
DEG  
1 × 10 100  
12.76  
0 [ X M ]  
P
r
R
0
Floating point format  
]
:│θ│<  
Deg  
Rad  
Grad  
4.5 × 10 10 deg  
Converting from Decimal to Sexagesimal  
2.12345 = ? 2.12345 [ 2ndF ] [  
The floating point format displays numbers in decimal form, using up  
to 10 digits. Any trailing zeros are truncated.  
Common Math Calculations  
8π  
2 7 
׀
24 
׀׀
42  
:│θ│<  
2.5 × 10  
rad  
]
The following example calculations assume that your display is fixed  
at 2 decimal places.  
5 × 10 10 grad  
If the result of a calculation is too large to be represented by 10 digits,  
the display automatically switches to scientific format. If the result of a  
later calculation is small enough to be displayed in less than 10 digits,  
the calculator returns to floating point format.  
:│θ│<  
Base-n Calculations  
Converting between bases  
Also, for tan x:  
Reciprocal, Factorial  
:│θ│≠  
1
Deg  
Rad  
Grad  
90 (2n+1)  
1.25 [ 2ndF ] [ x –1] [  
DEG  
ENTER  
]
You can add, subtract, multiply, and divide binary, octal, and  
hexadecimal numbers in addition to decimal numbers. Select the  
= ?  
0.80  
π
1.25  
To set the display to floating point display format:  
:│θ│≠  
(2n+1)  
2
DEG  
ENTER  
]
5! = ?  
5 [ 2ndF ] [ x! ] [  
120.00  
number base you want by pressing [ BIN], [ OCT], [ HEX], or  
DEG  
0.  
1. Press [ 2ndF ] [ FIX ] [  
]
:│θ│≠  
100 (2n+1)  
DEC]. The BIN, OCT, and HEX indicators show you which base  
Square, Square Root, Cube Root, Power, Other Roots  
[
2 2 + 3 4 = ?  
2 [ x 2 ] [ + ] 3 [ x y ] 4 [  
DEG  
where n is an integer.  
you are using. (If none of these indicators is displayed, you are using  
decimal base.)  
Fixed point format  
ENTER  
]
85.00  
20.83  
1.61  
DD, MM, SS.SS 1 × 10 100  
,
5 [ × ] 27 [ 2ndF ] [ 3 ] [ + ]  
ENTER  
The fixed point, scientific, and engineering formats use a fixed  
number of decimal places to display numbers. If more than the  
specified number of decimal places is keyed, the entry will be rounded  
to the correct number of decimal places.  
DEG  
DEG  
5 ×3  
+
= ?  
34  
27  
The number keys that are active in a particular base are:  
Binary base: [ 0 ] and [ 1 ]  
34 [  
] [  
]
0 MM, SS.SS  
72 [ 2ndF ] [ X ] 9 [  
9
= ?  
ENTER  
]
72  
x
< 1 × 10 100  
Octal base: [ 0 ] to [ 7 ]  
Logarithms and Antilogarithms  
Ex. 1: Fix the display at 2 decimal places, then key in 3.256  
x y  
x > 0 : –1 × 10100 < y log x < 100  
DEG  
DEG  
Decimal base: [ 0 ] to [ 9 ]  
ENTER  
7 [ ln ] [ + ] 100 [ log ] [  
2 [ 2ndF ] [ 10 x ] [  
ln7 + log100 = ?  
10 2 = ?  
]
3.95  
DEG  
1. Press [ 2ndF ] [ FIX ] 2  
ENTER  
0.00  
3.26  
x = 0 : y > 0  
Hexadecimal base: [ 0 ] to [ 9 ] and [ A ] to [ F ]  
ENTER  
]
100.00  
DEG  
5 [ 2ndF ] [ e x ] [ – ] 2 [+/–]  
ENTER  
DEG  
x < 0 : y = n, 1/(2n+1)  
where n is an integer  
1
[ 2ndF ] [ DEC] 31  
2. Key in 3.256 [  
]
e 5 – e –2 = ?  
31.  
11111.  
37.  
DEG  
31 (base 10)  
= ? (base 2)  
= ? (base 8)  
[ 2ndF ] [ e x ] [  
]
148.28  
DEG BIN  
DEG OCT  
DEG HEX  
[ 2ndF ] [ BIN]  
If fewer than the set number of decimal places is keyed, the entry will  
be padded with trailing zeros.  
[ 2ndF ] [ OCT]  
but –1 x 10100  
<
log x100  
Fraction calculations  
= ? (base 16)  
y
[ 2ndF ] [ HEX]  
Ex. 2: Fix the display at 4 decimal places, then key in 4.23  
1F.  
Fractions are displayed as follows:  
DEG  
x Y  
[ 2ndF ] [ HEX] 4 [ × ] 1B  
ENTER  
1
y > 0 : x 0, –1 x 10100  
<
log y < 100  
DEG HEX  
DEG  
1. Press [ 2ndF ] [ FIX ] 4  
0.0000  
4.2300  
6C.  
4 × 1B (base 16)  
= ? (base 2)  
[
]
x
5
DEG  
BIN1101100.  
108.00  
5
12  
ENTER  
=
=
2. Key in 4.23 [  
]
[ 2ndF ] [ BIN]  
y = 0 : x > 0  
12  
= ? (base 10)  
= ? (base 8)  
DEG  
[ 2ndF ] [ DEC]  
Scientific format  
y < 0 : x =2n+1, l/n  
DEG OCT  
In scientific format, the number 891500 is shown as 8.915 × 10 05  
where 8.915 is the mantissa and 5 is the exponent of 10.  
,
5
[ 2ndF ] [ OCT]  
154.  
56  
5
12  
56  
where n is an integer other than 0  
12  
1
but –1 x 10100  
<
log y 100  
Negative Numbers and Complements  
Note :The display is truncated if the integer, numerator, denominator  
and fraction symbols together are more than 10 digits.  
Ex. 3: To display 7132 × 125 in scientific format:  
x
In binary, octal, and hexadecimal bases, negative numbers are  
expressed as complements. The complement is the result of  
DEG  
b
InputThe integer, numerator, denominator  
and fraction symbols must in total be no  
more than 10 digits.  
ENTER  
1. Key in 7132 [ × ] 125 [  
]
891500.  
8.915  
a
/c  
d
Press [ 2ndF ] [  
fraction.  
/c ] to convert the displayed value to an improper  
subtracting that number from 10000000000 in that number’s base.  
You do this by pressing [+/–] in a non-decimal base.  
DEG  
05  
→  
2. Press [ F E ]  
ResultDisplayed as a fraction when the  
Calculate the  
complement of  
binary number  
11011  
You can convert an entry to scientific notation by pressing [EXP] after  
entering the mantissa.  
2
3
3
5
integer, numerator and denominator are  
b
b
DEG BIN  
+ 7  
4
2 [ a /c ] 3 [ + ] 7 [ a /c ] 3  
DEG  
DEG  
each less than 1 × 1010  
.
15  
8
4
[ 2ndF ] [ BIN ] 11011 [+/–]  
b
ENTER  
[ a /c ] 5 [  
]
1111100101.  
Ex. 4: Key the number 4.82296 × 10 5  
0 rn, n9999999999; n, r are integers.  
nPr, nCr  
STAT  
= 8  
15  
124  
DEG  
05  
x  < 1 × 10 50 , Σ x  < 1 × 10 100  
1. Key in 4.82296 [ EXP ] 5  
4.82296  
Complex Number Calculations  
d
[ 2ndF ] [  
/c ]  
124 15  
0 ≦│Σx 2│<1 × 10 100; n, r are integer  
=
Engineering format  
15  
Press [ CPLX ] to enter complex number mode. The CPLX indicator  
appears on the display. You can add, subtract, multiply, and divide  
complex numbers.  
n0, Sn1,σ:n0  
x
Engineering format is similar to scientific format, except that the  
mantissa can have up to three digits to the left of the decimal and the  
b
ENTER  
], or if a fraction was  
If you press [ a /c ] after pressing [  
combined with a decimal number, the answer is displayed as a  
decimal number.  
Range = 1 ~ r, 1nr, 80r20400  
0 X 9999999999 (for zero or positive)  
–9999999999 X –1 (for negative)  
exponent is always a multiple of three. This is useful if you have to  
DEC  
BIN  
Complex numbers are generally represented as a + b i, where a is the  
real part and bi is the imaginary part.  
convert units that are based on multiples of 10 3  
Ex. 5: Convert 15V to 15000mV (V = Volts)  
.
4
9
3
4
b
b
5 [ a /c ] 4 [ a /c ] 9 [ + ] 3  
DEG  
5
+ 3  
[ 2ndF ] [ CPLX ] 7 [ a ] 9  
9
7
36  
9.19  
12.19  
b
b
0
X
0111111111 (for zero or  
ENTER  
[ a /c ] 3 [ a /c ] 4 [  
]
DEG CPLX  
DEG  
DEG  
[ +/– ] [ b ] [ + ] 15 [ a ] 10 [ b ]  
ENTER  
( 7 – 9 i ) +  
(15 + 10 i) = ?  
22.00  
1.00  
1. Key in 15  
15.  
positive)  
7
DEG  
DEG  
[
]
= 9  
= 9.19  
b
[ a /c ]  
03  
36  
DEG CPLX  
1000000000 X 1111111111  
(for negative)  
[ b ]  
2. Press [ ENG ] twice.  
Ex. 6: Convert 15V to 0.015KV (V = Volts)  
1. Key in 15  
15000.  
b
b
4
8
8 [ a /c ] 4 [ a /c ] 9 [ + ]  
+ 3.75 = 12.19  
Note: Memory calculation is available in complex number mode.  
ENTER  
3.75 [  
]
9
DEG  
DEG  
OCT  
HEX  
0 X 3777777777 (for zero or positive)  
4000000000 X 7777777777  
(for negative)  
15.  
Where possible, a fraction is reduced to its lowest terms after you  
ENTER  
Random Numbers  
Press [ 2ndF ] [ RND ] to generate a random number between 0.000  
and 0.999.  
÷
press [ + ], [ – ], [ × ], [  
] or [  
].  
03  
0.015  
2. Press [ 2ndF ] [  
] [ 2ndF ] [  
]
b
b
3 [ a /c ] 119 [ a /c ] 21  
ENTER  
119  
21  
2
3
DEG  
8
2
3
3
= 8  
Order of Operations  
Unit Conversions  
The unit conversion keys are [°F °C ], [ mmHg Kpa ], [ gal I ],  
[
]
0 X 2540BE3FF (for zero or positive)  
FDABF41C01 X FFFFFFFFFF (for  
negative)  
Each calculation is performed in the following order of precedence:  
1. Operations in parentheses.  
→  
→  
→  
A result is displayed in decimal format if the integer, numerator,  
denominator and fraction symbols are together more than 10 digits.  
→  
→  
[ lb kg ] and [ oz g ]. The following example illustrates the general  
procedure for converting values from one unit to another.  
b
b
b
b
2. Functions that require pressing the function key before entering a  
value, for example, [ DATA ] in statistics mode, and [ EXP ].  
12345 [ a /c ] 5 [ a /c ] 16  
5
12345 +5  
16  
= 12350.77  
6
DEG  
Overflow and Error Conditions  
The symbol E appears when any of the following conditions occur.  
Press [ ON/C ] to remove the overflow or error indicator.  
12350.77  
[ + ] 5 [ a /c ] 6 [ a /c ] 13  
ENTER  
13  
DEG  
→  
12 in = ? cm  
98 cm = ? in  
12 [ A B ] [ 2ndF ] [ in cm]  
30.48  
38.58  
[
]
3. Functions that require values to be entered before pressing the  
function key, for example, cos, sin, tan, cos –1, sin –1, tan –1, log, ln,  
98 [ 2ndF ] [ A B ] [ 2ndF ]  
→  
DEG  
3
Converting Angular Units  
x 2, x –1  
,
,
,
, x!, %, RND, ENG,  
,
, and the unit  
[ in cm ]  
π
When you attempt to perform a function calculation with a number  
outside the allowable input range.  
You can specify an angular unit of degrees (DEG), radians (RAD), or  
grads (GRAD). You can also convert a value expressed in one  
angular unit to its corresponding value in another angular unit.  
conversion functions.  
Statistics  
4. Fractions.  
When you attempt to divide a number by 0.  
Press [ 2ndF ] [ STAT ] to enter statistics mode. The STAT indicator  
appears on the display. In statistics mode you can calculate the  
following single-variable statistics:  
5. +/–  
When you have pressed the [ ( ] key more than 15 times in a  
single expression.  
The relation between the angular units is:  
6. x y, X  
180° = radians = 200 grads  
π
n
number of data items  
sum of the values of all the data items  
sum of the squares  
When any result (whether intermediate or final) or the  
7. nPr, nCr  
accumulated total in memory is outside ±9.999999999 × 10 99  
To change the angular unit setting to another setting, press  
[ DRG ] repeatedly until the angular unit you want is indicated in  
the display.  
Σx  
Σx2  
÷
8. ×,  
When there are more than six pending operations.  
9. +, –  
mean value  
x
If the calculator becomes locked and pressing keys has no effect,  
press [ M+ ] and [ ENG ] at the same time. This unlocks the calculator  
and returns all settings to their default values.  
After entering the value of an angle, press [ 2ndF ] [ DRG  
repeatedly until the value is converted to the desired unit.  
]
x
2 ( x)2/n  
n 1  
Corrections  
s
sample standard deviation  
DEG  
90  
If you have made a mistake when entering a number and you have  
not yet pressed an arithmetic operator key, just press [ CE ] to clear  
the last entry. You can then input the desired number again.  
Alternatively,you can delete digits one at a time by pressing the  
90.  
90° (deg)  
= ? (rad)  
= ? (grad)  
RAD  
x
2 ( x)2/n  
[ 2ndF ] [ DRG  
[ 2ndF ] [ DRG  
]
]
Basic Calculations  
The following examples of basic calculations assume that your  
calculator is in decimal base and with floating point display.  
1.57  
σ
population standard deviation  
GRAD  
n
100.00  
backspace key: [ 00 0 ].  
Continued on other side  
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