User manual HP 9S SCIENTIFIC CALCULATORS

[. . . ] hp 9s Scientific Calculator General Operations Power Supply On or Off To turn the calculator on, press [ON/C]. To turn the calculator off, press [2ndF] [OFF]. Auto power-off function 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. [. . . ] 0. 5 deg 8 Rad2. 5 × 10 rad Grad5 × 10 grad Also, for tan x: Deg90 (2n+1) Rad 2 10 Deg4. 5 × 10 Common Math Calculations The following example calculations assume that your display is fixed at 2 decimal places. Reciprocal, Factorial 1 ­1 1. 25 [ 2ndF ] [ x ] [ENTER] =?] [ENTER] DEG DEG Converting from Sexagesimal to Decimal ] 45 [ ] 30. 5 12 deg. , 45 min. , 12 [ [ ] 30. 5 sec. = ?Converting from Decimal to Sexagesimal DEG 12. 76 2 7 24 42 2. 12345 = ? 2. 12345 [ 2ndF ] [ ] DEG Base-n Calculations Converting between bases 0. 80 120. 00 85. 00 20. 83 1. 61 3. 95 100. 00 148. 28 (2n+1) 0. Fixed point format 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. 1: Fix the display at 2 decimal places, then key in 3. 256 1. Press [ 2ndF ] [ FIX ] 2 Key in 3. 256 [ENTER] DEG DEG Grad100 (2n+1) where n is an integer. DD, MM, SS. SS 1 × 10 100, Square, Square Root, Cube Root, Power, Other Roots 2 +3 =?5 × 3 27 + 34 = ? 9 2 4 2 [ x ] [ + ] 3 [ x ] 4 [ENTER] 3 5 [ × ] 27 [ 2ndF ] [ ] [ + ] 34 [ ] [ENTER] X 72 [ 2ndF ] [ ] 9 [ENTER] 2 y DEG DEG DEG You can add, subtract, multiply, and divide binary, octal, and hexadecimal numbers in addition to decimal numbers. Select the number base you want by pressing [BIN], [OCT], [HEX], or [DEC]. The BIN, OCT, and HEX indicators show you which base you are using. (If none of these indicators is displayed, you are using decimal base. ) The number keys that are active in a particular base are: Binary base: [ 0 ] and [ 1 ] Octal base: [ 0 ] to [ 7 ] Decimal base: [ 0 ] to [ 9 ] Hexadecimal base: [ 0 ] to [ 9 ] and [ A ] to [ F ] 31 (base 10) = ?(base 8) [ 2ndF ] [DEC] 31 [ 2ndF ] [BIN] [ 2ndF ] [OCT] [ 2ndF ] [HEX] [ 2ndF ] [HEX] 4 [ × ] 1B [ENTER] [ 2ndF ] [BIN] [ 2ndF ] [DEC] [ 2ndF ] [OCT] DEG DEG BIN DEG OCT DEG HEX DEG HEX DEG BIN DEG DEG 0 MM, SS. SS x < 1 × 10 100 72 = ? xy 0. 00 3. 26 x > 0 : ­1 × 10100 < y log x < 100 x=0:y>0 x < 0 : y = n, 1/(2n+1) where n is an integer but ­1 x 10100 < 1 y 100 Logarithms and Antilogarithms ln7 + log100 = ?e ­e 5 ­2 7 [ ln ] [ + ] 100 [ log ] [ENTER] x 2 [ 2ndF ] [ 10 ] [ENTER] 5 [ 2ndF ] [ e ] [ ­ ] 2 [+/­] x [ 2ndF ] [ e ] [ENTER] x DEG DEG DEG If fewer than the set number of decimal places is keyed, the entry will be padded with trailing zeros. 2: Fix the display at 4 decimal places, then key in 4. 23 1. Press [ 2ndF ] [ FIX ] 4 Key in 4. 23 [ENTER] DEG DEG =? log x 100 < 1 log y < 100 x Fraction calculations Fractions are displayed as follows: 5 12 56 5 12 5 12 5 56 12 31. 6C. 0. 0000 4. 2300 05 x Y y > 0 : x 0, ­1 x 10 y=0:x>0 y < 0 : x =2n+1, l/n = = Scientific format In scientific format, the number 891500 is shown as 8. 915 × 10 where 8. 915 is the mantissa and 5 is the exponent of 10. 3: To display 7132 × 125 in scientific format: 1. Key in 7132 [ × ] 125 [ENTER] E Press [ F ] DEG DEG , 891500. 8. 915 05 a b/c You can convert an entry to scientific notation by pressing [EXP] after entering the mantissa. Key in 4. 82296 [ EXP ] 5 Engineering format 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 exponent is always a multiple of three. This is useful if you have to 3 convert units that are based on multiples of 10 . 5: Convert 15V to 15000mV (V = Volts) 1. 6: Convert 15V to 0. 015KV (V = Volts) DEG DEG OCT 0 X 3777777777 (for zero or positive) 4000000000 X 7777777777 (for negative) Where possible, a fraction is reduced to its lowest terms after you press [ + ], [ ­ ], [ × ], [ ÷ ] or [ENTER]. 119 2 =8 3 21 3 Random Numbers Press [ 2ndF ] [ RND ] to generate a random number between 0. 000 and 0. 999. Order of Operations Each calculation is performed in the following order of precedence: 1. [. . . ] (If you press [ DATA ] the item number of the data appears briefly before the value. ) Ex. 10: View the data entered in Ex. 2. Press [ 2ndF ] [ EDIT ] to enter edit mode. Press [ DATA ] once to view the first data item. DEG ED STAT DEG ED STAT 3. 1. 5 seconds dAtA 1 2. 00 Continue pressing [ DATA ] to display each data item. You will see data 2, 5. 00, data 3, 5. 00, data 4, 5. 00, data 5, 5. 00, data 6, 9. 00, data 7, 9. 00, data 8, 9. 00 in sequence. [. . . ]