Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by Victocyph on May 18th, 2014
How To Use Drg Button On Casio Fx-991es Plus Scientific Calculator
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Related Casio FX-991ES Manual Pages
User Guide - Page 3
... access the function. Enter the BASE-N Mode to access the function.
• The following shows what function it . Example: 1s(sin-1)1=
Indicates the function that uses Math format,
while the LINE mark indicates Linear format. E-1
Note that this is represented in green brackets)
It means this Manual
• The MATH mark...
User Guide - Page 4
...memory.
19(CLR)3(All)=(Yes)
• For information about calculation modes and setup settings, see "Calculation Modes and Calculator Setup".
• For information about memory, see the symbol Appendix in the Appendix. Moreover, CASIO Computer Co., Ltd. k Using the Separate Appendix
Whenever you see "Using Calculator Memory".
Note that this User's Guide refer to the corresponding...
User Guide - Page 5
... cause certain components to direct heat or dispose of it by burning it will not get into the
calculator. • Use only the type of the calculator by incineration.
• Improperly using this manual handy for this calculator in a safe place where it . Never expose the battery to suddenly burst, creating the risk of small...
User Guide - Page 6
... very dirty, wipe it might be splashed by water or exposed to and malfunction of the calculator. Never use and storage of the calculator in areas subjected to become corrupted or lost completely. Heat can leak, causing damage to large amounts of humidity or dust.
Because of this unit ...
User Guide - Page 7
... turn on the display. Replace the battery. k Turning Power On and Off
• Press O to turn off the calculator.
After the setting is the way you want, press A.
• You can also adjust contrast using the calculator, slide its hard case downwards to remove it probably means that battery power is on the...
User Guide - Page 9
...
STAT
BASE-N
EQN MATRIX
TABLE
VECTOR
(2) Press the number key that takes a long time to select. • To select the CMPLX Mode, for example, press 2.
Calculation Modes and Calculator Setup
k Calculation Modes
When you can use to the mode you can jump between...
User Guide - Page 10
... are rounded off to 10) controls the number of
decimal places for displayed calculation results. Calculation results are written on paper.
• Linear format causes fractions and other ...you specify (from 1 to the specified digit before being displayed. Calculation results are rounded off to use "]CONT'".
Example: 1 ÷ 7 = 1.4286 × 10-1 (Sci5) 1.429 × 10-1 ...
User Guide - Page 11
... results are displayed using exponential format. only.
• Norm: Selecting one of the STAT Mode STAT editor screen on or off.
The decimal point for input values is applied for calculation results
. Norm1:...)1(a+bi)
Polar Coordinates
1Nc3(CMPLX)2(r∠θ)
Specifying the Statistical Display Format
Use the following procedure to turn display of the frequency (FREQ) column of ...
User Guide - Page 12
... log(, ln(, e^(, 10^(, '(, 3'(, Abs(, Pol(, Rec(, ∫(, d/dx(, Σ(, P(, Q(, R(, arg(, Conjg(, Not(, Neg(, det(, Trn(, Rnd(
E-10 Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator lets you need to this: COMP MthIO Deg Norm1 d/c a+bi OFF Dot
• To cancel initialization without doing anything, press A(Cancel) instead of the...
User Guide - Page 13
...a Long Expression The display can input up to 99 bytes of a calculation, immediately before the = key is pressed. E-11
Number of the expression, indicating that... ): 2 × (5 + 4), etc. • Before a function with Math format, each key operation uses up more information, see "Omitting a Final Closed Parenthesis".
For details, see "Inputting with Math Format". Input expression...
User Guide - Page 14
...cursor is a vertical flashing line (I ) or
horizontal ( ) flashing line on whether you should use the insert mode.
You can switch to the overwrite mode by pressing 1Y(INS). • With... format input is selected. • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to Math. Changing the Character or Function...
User Guide - Page 27
... / automatically inputs "Ans" command.
• With the above procedure, you need to demonstrate how you execute a calculation using any one . The "M" display indicator indicates data in Answer Memory. Independent Memory
Calculation results can use memory.
This section uses the COMP Mode (N1) to recall Answer Memory contents after the first one of the following keys...
User Guide - Page 35
...degrees.
For details, see
Appendix . LINE
(15(π)/2) 1G(DRG')2(r)=
501G(DRG') 3(g)=
Appendix cos (π radians) = -1, cos (100 grads) = 0 cos-1 (-1) = 180
cos-1 (-1) = π
k Exponential Functions and Logarithmic Functions
• Exponential and logarithmic functions can be used for input. E-33
The calculator will automatically convert it to display the angle unit...
User Guide - Page 38
... you do. • ∫(, d/dx(, Pol(, Rec(, and Σ( cannot be used within f(x), a, or tol. • Differential calculations can omit specification of X (All non-X variables are treated as the calculator's default angle unit. • A "Time Out" error occurs when a differential calculation ends
without the ending condition being fulfilled. • A smaller tol value provides better...
User Guide - Page 46
... the STAT Mode from another mode. k Absolute Value and Argument (Abs, arg)
You can use the following procedure to select a statistical calculation type.
Selecting a Statistical Calculation Type In the STAT Mode, display the statistical calculation type selection screen.
E-44 Use the STAT menu to obtain the absolute value (|Z|) and argument (arg) on the Gaussian plane...
User Guide - Page 51
... sum of squares of the sample data and sum of standard normal
distribution. Calculate number of samples, mean value (o) and population standard deviation value (xσn) obtained from Example ) produces
the probabilities shown below , using insert and delete:
{0, 1, 2, 3, 4, 5, 6, 7, 9, 10}
(FREQ: ON)
Edit the FREQ data to the following:
{1, 2, 1, 2, 2, 2, 3, 4, 2, 1}
(FREQ: ON...
User Guide - Page 61
...; MatB (Multiplying
Two Matrices) 3 × MatA (Matrix Scalar Multiplication) Obtain the determinant of Matrix C (Trn(MatC)). k Matrix Menu Items
The following examples use the matrices input in a subsequent calculation, just as with Answer Memory contents. MatA + MatB (Adding Two Matrices) MatA × MatB, MatB × MatA - Obtain the transposition of Matrix A (det...
User Guide - Page 66
... becomes θ = cos-1 (A•B)
AB
AB
*2 Size 1 vector perpendicular to recall. You can use the vectors input in any calculation mode except for BASE-N. • To recall a scientific constant, press 17(CONST). Determine the size of the angle (angle unit: Deg) formed by
vectors A = (-1, 0, 1) and B = (1, 2, 0), and one...
User Guide - Page 68
...2 1 ÷ (2i) = -
1
i
2
k Stack Limitations
This calculator uses memory areas called stacks to be performed first, so the use of parentheses can result in the illustration below.
1
23
45
123 4 5... where the sign is omitted: Multiplication sign omitted immediately before π, e, variables, scientific constants (2π, 5A, πA, 3mp, 2i, etc.), functions with parentheses (2'(3), ...
User Guide - Page 73
... only when relatively bright light is low. Perform the following operation: 19(CLR) 1(Setup) =(Yes). The TWO WAY POWER system, however, lets you continue to use the calculator as long as there is enough light to use the calculator if its button battery is operating normally, replace the battery at least once every three years.
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