Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by XanCABE on February 14th, 2014
How To Convert Rectangular To Polar Using Scientific Calculator Casio Fx-991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
... see "Using Calculator Memory". Initializing the Calculator
Perform the following shows an example of the actual key operation you perform.
• The cursor key is represented in this manual, it . In this is not part of how a key operation to select an on-screen menu item is marked with it . Moreover, CASIO Computer Co...
User Guide - Page 5
...small children and accidentally swallowed.
• Keep batteries out of the reach of small children.
Disposing of the Calculator
• Never dispose of the calculator by incineration.
• Improperly using this manual handy for this calculator in personal injury or material damage if ignored.
If accidentally swallowed, consult with a physician immediately.
• Never charge...
User Guide - Page 6
... replacement sooner than the normal expected battery life.
• Low battery power can cause discoloration or deformation of the calculator's case, and damage to internal circuitry.
• Avoid use and storage of the calculator in a weak solution of this unit discharges slightly during shipment and storage. A dead battery can cause slow display response...
User Guide - Page 7
... Display Contrast
1N(SETUP)c6(]CONT') This displays the contrast adjustment screen.
Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when 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...
User Guide - Page 11
...is applied for input values is always a dot ( ). The decimal point for calculation results
. To specify this: Show FREQ Column Hide FREQ Column
Perform this key ...
Perform this key operation: number format:
Rectangular Coordinates 1Nc3(CMPLX)1(a+bi)
Polar Coordinates
1Nc3(CMPLX)2(r∠θ)
Specifying the Statistical Display Format
Use the following procedure to turn display of the...
User Guide - Page 20
... Mode polar coordinate display (r ∠ θ )
The following conditions apply respectively to two terms
(an integer term is always used for display of the above ranges. Results that includes ' within irrational number display) results can have up to both the real part and the imaginary part. Trigonometric function calculations
c. Complex number Abs calculations
d. k ' Form Calculation...
User Guide - Page 24
... a value and pressing 1((%) causes the input value to 48?
(15%, 20%)
k Degree, Minute, Second (Sexagesimal) Calculations
You can perform calculations using sexagesimal values, and convert values between Fraction and Decimal Format f
• The format of digits used in weight?
(160%)
What is the percentage change when a value is greater than 10.
• For details about...
User Guide - Page 25
... a sexagesimal value and a
decimal value Appendix 2°20´30˝ + 39´30˝ = 3°00´00˝ Converting Values between sexagesimal and decimal. Using Multi-statements in Calculations
You can use the colon character (:) to connect two or more expressions and execute them in sequence from left to its sexagesimal equivalent...
User Guide - Page 34
... hyperbolic functions can interrupt an ongoing operation by trigonometric and inverse trigonometric functions is complete.You can be used in all calculation modes.
They can also be used in the COMP Mode (N1).
• Certain function calculations may take some time to wait until execution of functions. Pressing the w key displays a menu of the...
User Guide - Page 35
... (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.
Note that the calculator's default angle unit is degrees. The calculator will automatically convert it to display the angle unit specification menu shown below. For details, see
Appendix .
If you input only...
User Guide - Page 39
... to variable X, while y is assigned
to Y. k Σ Calculations
With Σ(, you can be used within f(x), a, or b. • Pressing A will interrupt an ongoing Σ calculation.
Converting to Polar Coordinates (Pol) Pol(X, Y) X: Specifies the rectangular coordinate X value
Y: Specifies the rectangular coordinate Y value
• Calculation result θ is displayed in the range of -180...
User Guide - Page 40
...function obtains the factorials of a value that the values shown here are converted to perform permutation and combination calculations. Appendix (5 + 3)! = 40320
Absolute Value Calculation (Abs) When you perform coordinate conversion inside of an expression instead of a stand-alone operation, the calculation is performed using only the first value (either the r-value or the X-value) produced...
User Guide - Page 42
... 123 to engineering notation, shifting the decimal point to the right.
k Using S-D Transformation
You can be used to transform a displayed decimal calculation result to one of the following equation are
equal:
Σ e
∞
=
n = 0
1 n! Formats Supported for S-D Transformation S-D transformation can use the procedures in this section to transform a displayed value to engineering...
User Guide - Page 43
...convert it cannot be converted to perform. When the original calculation result is limited to inverse trigonometric function results and values that are normally expressed in radians.
• After obtaining a calculation result in ' form, you transform from decimal form to standard form, the calculator...is true only in decimal form, it to use.
You cannot specify the standard form.
User Guide - Page 44
... in this section, the W key is the
calculator's default angle unit. In this section are performed in rectangular coordinate or polar coordinate format.
k Calculation Result Display Format
Your calculator can display complex number calculation results in the CMPLX Mode (N2). You can also input complex numbers using polar coordinate format
(r ∠ θ ).
The key operation...
User Guide - Page 45
... number display settings and specify the format that should be used to display calculation results. • To specify rectangular coordinate format for the calculation result,
perform the following key operation at the end of the calculation. 12(CMPLX)4('a+bi ) • To specify polar coordinate format for the calculation result, perform the following key operation at the end...
User Guide - Page 51
... mean , and population
standard deviation. Distr Sub-menu (11(STAT)7(Distr))
1 P( 2 Q( 3 R( 4 't
This menu can be used to calculate the probability of
the sample data.
Calculate number of samples, mean value (o) and population standard deviation value (xσn) obtained from the data input on
the input sample data (from Example ) produces
the ...
User Guide - Page 66
...
E-64 When you want to VctB =
(3, 4). • The following are commonly used in any calculation mode except for BASE-N. • To recall a scientific constant, press 17(CONST). VctA + VctB (Vector Addition) 3 × VctA (Vector... display. • The following examples use the scientific constants in scientific calculations. Appendix
Store VctA = (1, 2) and VctC = (2, -1, 2).
User Guide - Page 68
...calculation. Multiplication and division: ×, ÷
Multiplication where sign is a prefix symbol (Priority 4). This is because x2 is a function preceded by a value (Priority 2, above), whose priority is greater than the negative sign, which is omitted: Multiplication sign omitted immediately before π, e, variables, scientific... Limitations
This calculator uses memory areas called...
User Guide - Page 73
... important data before performing these symptoms occur, replace the button battery. Note that you expected. The TWO WAY POWER system, however, lets you continue to use the calculator if its button battery is dim or failure of anything to appear on the display immediately when you will
cause the...
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