Casio FX-991WA manual

E fx-115W A fx-991W A User’s Guide[...]

Removing and Replacing the Calculator’ s Co ver • To R e mo ve the cover Gr asp the top of the co v er , and slide the unit out from the bottom. • To Replace the co ver Gr asp the top of the co ver , and slide the unit in from the bottom. Alw ays slide the unit into the co ver with the unit’ s displa y end first. Never slide the keyboard en[...]

앫 1 앫 Safety Precautions Be sure to read the following safety precautions before using this calculator . Keep this manual handy for later ref- erence. Caution This symbol is used to indicate information that can result in personal injury or material damage if ignored. Batteries • After remo ving the batteries from the calculator , put them in[...]

앫 2 앫 • The displays and illustrations (such as key markings) sho wn in this User’s Guide are f or illustrative pur- poses only , and ma y differ some what from the ac- tual items they represent. • The contents of this manual are subject to change without notice. • In no event shall CASIO Computer Co., Ltd. be li- able to anyone for spe[...]

앫 3 앫 • Av oid use and storag e in areas subjected to lar g e amounts of humidity and dust. Ta k e care ne ver to leav e the calculator where it might be splashed by water or exposed to large amounts of humidity or dust. Such elements can damage internal circuitr y . • Never drop the calculator or otherwise subject it to strong impact. • [...]

앫 4 앫 Contents Safety Precautions ........................................... 1 Handling Precautions ...................................... 2 Tw o-line Display ............................................... 5 Key Layout ........................................................ 6 Before Starting Calculations... ...................... 7 k Modes .[...]

앫 5 앫 Statistical Calculations .................................. 18 k Standard Deviation (SD Mode) ............................ 18 k Probability Distribution Calculations . .................. 19 k Regression Calculations (REG Mode) ................. 20 Complex Number Calculations (CMPLX Mode) ................................................ 22[...]

앫 6 앫 DT CL M- M AM µ G mk p f n BI N S ScI McI AB C sin -1 cos -1 tan -1 D XY EF DISTR Re < - > lm arg r Abs y y Rnd Ran# 10 e SHIFT ALPHA MODE REPLA Y DEC OCT HEX BIN Key Layout Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 11 8 2 15 15 25 14 17 15 14 11 17 28 14 27 14 27 16 11 15 14 14 14 10 28 10 10 10 13[...]

앫 7 앫 Before Starting Calculations... k Modes Application Mode Mode Name Indicator Calculation Modes Normal calculations COMP – Complex number CMPLX CMPLX calculations Standard deviation SD SD calculations Regression calculations REG REG Base- n calculations BASE-N b (binary) o (octal) d (decimal) H (hexadecimal) Angle Unit Modes Degrees DEG [...]

앫 8 앫 •Y ou cannot set the angle unit or the displa y mode while the calculator is in the BASE-N mode. • The COMP , CMPLX, SD , and REG modes can be used in combination with the angle unit modes. •B e sure to check the current calculation mode (SD, REG, COMP , CMPLX) and angle unit mode (DEG, RAD , GRA) before beginning a calculation. k I[...]

앫 9 앫 k Error Locator •P ressing r or e after an error occurs displays the calculation with the cursor positioned at the location where the error occurred. k Exponential Display Formats This calculator can display up to 10 digits. Larger values are automatically displayed using exponential notation. In the case of decimal values, you can sele[...]

앫 10 앫 80. 00 1.5 -08 47. 00 90. 00 Basic Calculations •U se the COMP mode for basic calculations. • Example 1 : 3  (5  10 –9 ) 3 - R 5 e D 9 T = • Example 2 : 5  (9  7) 5 - R 9 + 7 T = •Y ou can skip all T operations before = . Memory Calculations k Independent Memory •V alues can be input directly into memor y , added [...]

앫 11 앫 8.4 00 6.9 00 4 5 2 3 2 7 15. 00 • Example: 193.2  23  8.4 193.2  28  6.9 193.2 j 1 23 = p 1 28 = Fraction Calculations k Fraction Calculations •U se the COMP mode for fraction calculations. •V alues are automatically displa y ed in decimal format whenever the total number of digits of a fractional value (integer ?[...]

앫 12 앫 C C Percentage Calculations •U se the COMP mode for percentage calculations. • Example 1 : To calculate 12% of 1500 1500 - 12 A v • Example 2 : To calculate what percentage of 880 is 660 660 880 A v • Example 3 : To add 15% onto 2500 2500 - 15 A v + • Example 4 : To discount 3500 b y 25% 3500 - 25 A v , • Example 5: If 300 [...]

앫 13 앫 Scientific Function Calculations •U se the COMP mode for scientific function calculations. •  = 3.14159265359 k T rigonometric/In verse T rigonometric Functions • Example 1 : sin63 ° 52  41  q q q 1 → “ R ” S 63 I 52 I 41 I = • Example 2 : cos ( rad ) q q q 2 → “ T ” W R A x 3 T = • Example 3 : cos  1[...]

앫 14 앫 5.287196909 00 –1.290024053 00 k Angle Unit Conversion •P ress A v to display the following menu. •P ressing 1 , 2 , or 3 converts the displayed value to the corresponding angle unit. • Example : To conver t 4.25 radians to degrees 4.25 A v 2 ( R ) = 243.5070629 4 . 2 5 r k Common and Natural Logarithms/ Antilogarithms • Exampl[...]

앫 15 앫 1023. 00 1.988647795 00 12. 00 40320. 00 0.664 00 1728. 00 9.424777961 00 400. 00 28.571 00 400.000 00 28.571 00 28.571 00 1  1 3 4 1 (Specifies three decimal places.) (Calculation continues using 10 display digits) 1 7 • Example 3: 7 123 ( = 123 ) 7 A H 123 = • Example 4: 123  30 2 123 + 30 K = • Example 5: 12 3 12 N = • E[...]

앫 16 앫 399.994 00 3.3 –01 56.088 0 03 81.25 –03 Sci - 14 = •P ress F F F F 3 1 to clear FIX specification. • Example 2: 1  3, displaying result with two significant digits (SCI 2) F F F F 2 2 1 3 = •P ress F F F F 3 1 to clear SCI specification. k ENG Calculations • Example 1: To conver t 56,088 meters to kilometers 56088 = J ?[...]

앫 17 앫 2. 00 1. 00 1.732050808 00 T R *F or displayed values, the calculator selects the ENG sym- bol that makes the numeric part of the value fall within the range of 1 to 1000. * ENG symbols cannot be used when inputting fractions. * The ENG mode cannot be used in combination with the CMPLX, or BASE-N modes. •P erforming any of the key oper[...]

앫 18 앫 1.047197551 00 840. θ 0 o • 0 n , 0 o swaps displayed value with value in memor y . k Permutation • Example: To deter mine how many diff erent 4-digit val- ues can be produced using the numbers 1 through 7 •N umbers cannot be duplicated within the same 4-digit value (1234 is allo wed, but 1123 is not). 7 A m 4 = k Combination • [...]

앫 19 앫 • Example: To calculate σ n  1 , σ n , o , n , Σ x , and Σ x 2 fo r the following data : 55, 54, 51, 55, 53, 53, 54, 52 Enter SD Mode F F 1 A m = (Memory Clear) 55 S 54 S 51 S 55 S 53 S S 54 S 52 S (Sample Standard Deviation σ n  1 ) A N = (Population Standard Deviation σ n ) A A = (Arithmetic Mean o ) A M = (Number of Data[...]

앫 20 앫 • Example : Using the x - data values input in the example on page 20, determine the normalized variate ( → t ) for x = 53 and normal probability distribution P( t ). 53 A D 4 ( → t ) = - 0.284747398 A D 1 ( P ( ) - 0.28 F = 0.38974 k Regression Calculations (REG Mode) •P ress F F 2 to enter the REG mode and then se- lect one of [...]

앫 21 앫 • Example: Atmospher ic Pressure vs. T emper ature Perform linear regression to de- termine the regression formula terms and correlation coefficient fo r the data nearby . Ne xt, use the regression formula to estimate at- mospheric pressure at 18 ° C and temperature at 1000 hPa. Enter REG Mode (Linear Regression) q q 2 1 A m = (Memory[...]

앫 22 앫 Enter REG mode (Quadratic regression) F F 2 r 3 A m = 29 P 1.6 S 50 P 23.5 S 74 P 38.0 S 103 P 46.4 S 118 P 48.0 S 118. REG (Reg ression Coefficient A) A q = - 35.59856934 (Reg ression Coefficient B) A w = 1.495939413 (Reg ression Coefficient C) A e = - 6.71629667 - 0 3 ( ˆ y when x i = 16) 16 A b - 13.38291067 ( ˆ x 1 when y i = 20) 2[...]

앫 23 앫 • Example: (2 + 3 i ) + (4 + 5 i ) Enter CMPLX Mode F 2 R 4 + 5 i T = 6. Real number part A r 8. i Imaginary number part k Absolute V alue/Argument Calculation • The procedure described below can be used to deter- mine the absolute value (Abs) and argument (arg) for a complex number of the format Z = a + bi , which is pre- sumed to e[...]

앫 24 앫 •S ee the Con v ersion P air T ab le sho wn below f or a com- plete list of av ailab le con v ersion pairs . • Example: To conver t 31 inches to centimeters 31 A c CONV 01 CONV 1 01 is the inches-to-centimeters con version pair number . 0. 31 i n cm = 78.74 31 i n cm •C o n version P air T able Based on ISO Standard (1992) data and[...]

앫 25 앫 Scientific Constants (fx-991W A ) •A total of 40 commonly-used scientific constants, such as the speed of light in a vacuum and Planck's constant are built-in for quick and easy lookup whenever you need them. •S imply input the number that corresponds to the scien- tific constant you want to look up and it appears instantly on t[...]

앫 26 앫 Number Constant Name Symbol 10 fine-structure constant α 11 classical electron radius re 12 electron Compton wavelength λ c 13 proton gyromagnetic ratio γ p 14 proton Compton wavelength λ cp 15 neutron Compton wavelength λ cn 16 Rydberg constant R ∞ 17 atomic mass unit u 18 proton magnetic moment µ p 19 electron magnetic moment ?[...]

앫 27 앫 •Y ou cannot use scientific functions in binar y , octal, deci- mal, and hexadecimal calculations. Y ou cannot input val- ues that include decimal part and an exponent. • If you input a value that includes a decimal part, the unit automatically cuts off the decimal par t. •N egativ e binary , octal, and hexadecimal v alues are pro-[...]

앫 28 앫 • Example 3: To perform the following calculation and produce a hexadecimal result: 120 16 or 1101 2 Hexadecimal mode F F 3 h 0. H l l l 3 (b ) 1101 2 0. H = 12d. H Degrees, Minutes, Seconds Calculations •Y ou can perf or m se xagesimal calculations using deg rees (hours), minutes, and seconds, and convert between sexagesimal and dec[...]

앫 29 앫 5. Enter the correct modes to perform the calculation and try again. If the above steps do not correct the prob lem, press the ke y. The calculator perf orms a self-check oper ation and deletes all data stored in memor y if any abnormality is detected. Make sure you alw a ys keep written copies of all impor tant data. k Error Messages Th[...]

앫 30 앫 •A c tion •P ress e or r to display the calculation with the cursor located at the location of the error . Mak e nec- essary corrections. Arg ERROR •C ause •I mproper use of argument •A c tion •P ress e or r to display the location of the cause of the error and make required corrections. k Order of Operations Calculations are[...]

앫 31 앫 k Stacks This calculator uses memory areas, called “stacks,” to tem- porarily store values (numeric stack) and commands (com- mand stack) according to their precedence during calcu- lations. The n umeric stac k has 10 le v els and the command stack has 24 le vels . A stack error (Stk ERROR) occurs whenever you try to perform a calcul[...]

앫 32 앫 5 Press to turn power on. Be sure not to skip this step. •A u t o Power Off Calculator power automatically turns off if y ou do not per- form any operation for about six minutes. When this hap- pens, press to turn power back on.[...]

앫 33 앫 k Input Ranges Internal digits: 12 Accuracy: As a rule, accur acy is ± 1 at the 10th digit. Functions Input Range sin x DEG 0   x   4.499999999  10 10 RAD 0   x   785398163.3 GRA 0   x   4.499999999  10 10 cos x DEG 0   x   4.500000008  10 10 RAD 0   x   785398164.9 GR[...]

앫 34 앫 1 2 n +1 Functions Input Range n P r 0  n  99, r  n ( n , r is an integer) 1  { n !/( n – r )!}  9.999999999  10 99 n C r 0  n  99, r  n ( n , r is an integer) Pol( x , y )  x  ,  y   9.999999999  10 49 ( x 2 + y 2 )  9.999999999  10 99 Rec( r ,  ) 0  r  9.999999999  10 99 [...]

앫 35 앫 Specifications Power Supply: Solar cell and a single G13 T ype button battery (LR44) Batter y Life: Appro ximately 3 y ears (1 hour use per da y). Dimensions: 10(H)  76(W)  150(D) mm 3 / 8 ⬙ (H)  3 ⬙ (W)  5 7 / 8 ⬙ (D) Wei ght: 85 g (3 oz) including batter y Power Consumption: 0.0001W Operating T emperature: 0 ° C ~ 40[...]

SA9911-A Printed in China HA310537-1 U.S. Pat. 4,410,956 CASIO COMPUTER CO. , L TD . 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan[...]