Casio fx-991ES PLUS User Manual

Efx-570ES PLUSfx-991ES PLUSUser’s GuideCASIO Worldwide Education Website http://edu.casio.comCASIO EDUCATIONAL FORUM http://edu.casio.com/forum/

E-9Using Values and Expressions as Arguments (Natural Display only)A value or an expression that you have already input can be used as the argument of

E-10 P ÷ 6 = 16 = 0.5235987756  (P) 6  16 f 0.5235987756 ('2 + 2) s '3 = '6 + 2'3 = 5.913591358   2 C 2 

E-11Percent CalculationsInputting a value and pressing (%) causes the input value to become a percent. 150 s20% = 30 150  20 (%) 30 Calculat

E-12 Transform the value 123 to engineering notation, shifting the decimal point to the left. 123  123 $(k) 0.123×103 $(k) 0.0

E-13Variables (A, B, C, D, E, F, X, Y)Your calculator has eight preset variables named A, B, C, D, E, F, X, and Y. You can assign values to variables

E-14°, r, g : These functions specify the angle unit. ° specifies degrees, r radians, and g grads. Input a function from the menu that appears when yo

E-15x ! : Factorial function. See 12. Abs : Absolute value function. Note that the input method is different depending upon whether you are using Nat

E-16Tips for Successful Integration CalculationsWhen a periodic function or integration interval results in positive and negative f(x) function values

E-17 To calculate '2 × 3(= 3'2 = 4.242640687...) to three decimal places (Fix 3) (SETUP)(Fix)   2 C 3  3'2 

E-18 To generate random integers in the range of 1 to 6 (RanInt) 1 (,) 6  2  6  1(Results shown here are for illustrative

ContentsImportant Information ... 2Sample Operations ...

E-19 To obtain the conjugate complex number of 2 + 3i (Complex number format: a + bi) (CMPLX)(Conjg) 2  3 $(i) 2–3i To obtain the absolute

E-20 7  20  To exit CALC:  To store A + Bi and then determine '3 + i, 1 + '3i using polar coordinates (rθ) B (CMPLX)

E-21 0  1  2  Current value of XInput an initial value for X (Here, input 1): 1  To exit SOLVE:  Solution screenNote: During the time fr

E-22 3  Input an initial value for X (Here, input 1): 1   7   13  Statistical Calculations (STAT)To start a statistical calculation

E-23Note: Use the FREQ (frequency) column to input the quantity (frequency) of identical data items. Display of the FREQ column can be turned on (dis

E-24• See the table at the beginning of this section of the manual for the regression formulas. • K, K1, K2 and L are not variables. They are command

E-25Calculating Estimated ValuesBased on the regression formula obtained by paired-variable statistical calculation, the estimated value of y can be c

E-26 (STAT)(Distr)(P() Results: Normalized variate (t): –0.762 P(t): 0.223Base-n Calculations (BASE-N)Press (BASE-N) t

E-27HexadecimalPositive: 00000000 x 7FFFFFFFNegative: 80000000 x FFFFFFFFSpecifying the Number Mode of a Particular Input ValueYou can input a

E-28 To determine the bitwise complement of 10102 (Not(10102)) (BASE)(Not) 1010  1111111111110101 To negate (take the two’s complement) of

E-2Important Information• The displays and illustrations (such as key markings) shown in this User’s Guide are for illustrative purposes only, and may

E-29EQN Mode Calculation Examples x + 2y = 3, 2x + 3y = 4 (EQN)(anX + bnY = cn) 1  2  3 

E-301. Press (MATRIX) to enter the MATRIX Mode. 2. Press (MatA)(2s2).• This will display the Matrix Editor for input of the elements of the 2 s 2

E-313. Use the Matrix Editor that appears to input the elements of the matrix. To assign 1 0 –10 –1 1 to MatC (MATRIX) (Dim)(MatC)(2

E-32 Obtain the absolute value of each element of MatB (Abs(MatB)). @(Abs) MatB Determine the square and cube of MatA (MatA2, MatA3).Note: Y

E-33 (X)V 1  2  1  1  0.5  Note: • You can use the number table screen for viewing values only. Table contents cannot be edited. • Th

E-34Vector Answer MemoryWhenever the result of a calculation executed in the VECTOR Mode is a vector, the VctAns screen will appear with the result. T

E-35 3 × VctA (Vector scalar multiplication), 3 × VctA – VctB (Calculation example using VctAns)  3 VctA VctB VctA • VctB (Vector do

E-36 To input the scientific constant C0 (speed of light in a vacuum), and display its value (CONST) (C0) To calculate C0 = 100

E-3733: (μ0) magnetic constant34: (F0) magnetic flux quantum35: (g) standard acceleration of gravity36: (G0) conductance quantum37: (Z0) charac

E-3825: atm  Pa 26: Pa  atm 27: mmHg  Pa 28: Pa  mmHg29: hp  kW 30: kW  hp 31: kgf/cm2  Pa 32: Pa  kgf/cm233: kgf • m  J 34: J  kgf

E-3• Never try to take the calculator apart. • Use a soft, dry cloth to clean the exterior of the calculator. • Whenever discarding the calculator or

E-39tanh–1x0  \x\ 9.999999999 s10–1logx/lnx0  x 9.999999999 s109910x–9.999999999 s1099  x  99.99999999ex–9.999999999 s1099  x  230.25850

E-40ErrorsThe calculator will display an error message whenever an error occurs for any reason during a calculation. There are two ways to exit an err

E-41Action: Make necessary corrections.Argument ERRORCause: There is a problem with the argument of the calculation you are performing.Action: Make n

E-42For details about initialized settings, see “Configuring the Calculator Setup”.4. Initialize all modes and settings by performing the following op

E-43Approximate Weight: fx-570ES PLUS: 100 g (3.5 oz) including the battery fx-991ES PLUS: 95 g (3.4 oz) including the batteryFrequently Asked Ques

Manufacturer:CASIO COMPUTER CO., LTD.6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, JapanResponsible within the European Union:CASIO EUROPE GmbHB

CASIO COMPUTER CO., LTD.6-2, Hon-machi 1-chomeShibuya-ku, Tokyo 151-8543, JapanSA0802-A

E-4Reading the DisplayThe display of the calculator shows expressions you input, calculation results, and various indicators.Input expression Indicat

E-5DispThe display currently shows an intermediate result of a multi-statement calculation.Important: For some type of calculation that takes a long t

E-6Linear Display (LineIO) causes fractions and other expressions to be displayed in a single line. Note: • The calculator switches to Linear Displa

E-7Initializing Calculator SettingsPerform the following procedure to initialize the calculator, which returns the calculation mode to COMP and return

E-81stParenthetical expressions2ndFunctions that require an argument to the right and a closing parenthesis “)” following the argument.3rdFunctions th