Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by tasosjulianj on July 25th, 2014
How To Convert Polar To Rectangular Using Scientific Calculator Fx-991ms
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Related Casio FX-991ES Manual Pages
User Guide - Page 5
... hands of 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 calculator in personal injury or material damage if ignored. Keep this manual. Doing so can cause certain components to read the...
User Guide - Page 6
..., benzene or other tight-fitting clothing where it might be exposed to large amounts of the calculator with a ballpoint pen or
other pointed object. • Use a soft, dry cloth to strong impact.
• Never twist or bend the calculator. Doing so can remove printed markings and can cause discoloration or deformation of the...
User Guide - Page 7
... display contrast. Important!
• If adjusting display contrast does not improve display readability, it , and then affix the hard case to the back of the calculator as shown in the illustration below. Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when you press N) is low.
User Guide - Page 11
... Point Display Format
To specify this decimal
point display format:
Dot (.) , Comma ( )
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 frequency (FREQ) column of the two available settings (Norm1, Norm2...
User Guide - Page 20
...polar coordinate display (r ∠ θ )
The following are the calculations for display of trigonometric calculation results.
Complex number Abs calculations
d.
k ' Form Calculation Range
Note
When performing complex number calculations... term is always used for which ' form is also counted as a term). ' form calculation results use display formats like those shown
...
User Guide - Page 24
...a value is greater than 10.
• For details about to become a percent. E-22 k Percent Calculations
Inputting 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 the fraction depends on...
User Guide - Page 25
...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. Sexagesimal Calculations • Performing the following
two calculations...while a calculation result is an intermediate result of sexagesimal calculations
produces a sexagesimal result. - Appendix Convert 2.255 ...
User Guide - Page 34
... and Inverse Trigonometric Functions
• Trigonometric and inverse trigonometric functions can input pi (π) or natural logarithm base e into a calculation. They can be sure to use π and e in the same modes as the calculator's default angle unit. See "Specifying the Default Angle Unit" for more information. Appendix sinh 1 = 1.175201194, cosh-1 1 = 0
E-32 The...
User Guide - Page 35
... to degrees: π radians = 90°, 50 grads = 45° 2
The following procedure assumes that you can be used for input. Example: To convert the following values to the angle unit of "logmn" while using Math format.
Note that the calculator's default angle unit is a natural logarithm function with base e. • You can also...
User Guide - Page 39
... assigned 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...
User Guide - Page 40
..., nCr, Rnd(
• These functions can be integers in the range of a value that is performed using only the first value (either the r-value or the X-value) produced by your calculator will be used in complex number calculations in the same modes as the trigonometric functions. Example: Pol ('2, '2) + 5 = 2 + 5 = 7
Appendix to
k Other Functions
This section...
User Guide - Page 42
... value to the left.
k Using S-D Transformation
You can be used to transform a displayed decimal calculation result to transform a value between standard form and decimal form. E-40 Transforming Displayed Values
You can use S-D transformation to one of the following equation are
equal:
Σ e
∞
=
n = 0
1 n! Performing S-D transformation again converts back to the right...
User Guide - Page 43
...
• Each press of S-D Transformation Note that S-D transformation can convert it cannot be converted to ' form. Fraction: The current fraction display format setting determines
whether...When the original calculation result is true only in ' form, you transform from decimal form to standard form, the calculator automatically decides the standard form to use.
Examples of the...
User Guide - Page 44
...Math
• The angle unit for example.
2+3i
CMPLX
Math
• You can display complex number calculation results in rectangular coordinate or polar coordinate format.
Use the i key when inputting a complex number of Calculation Results Using Rectangular
Coordinate Format (a + bi )
Example 1: 2 × ('3 + i) = 2'3 + 2i = 3.464101615 + 2i
MATH
CMPLX
Math
2*(!3e+i)=
E-42 You can...
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
...Select single-variable (1-VAR) and input the following data:
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
(FREQ: ON)
Edit the data to the following, using the mean , and population
standard deviation. Calculate minimum value and maximum value.
Calculate sum of squares of the sample data and sum of standard normal
distribution.
Distr Sub-menu (11(STAT)7(Distr))
1 P( 2 Q( 3 R( 4 't
This menu...
User Guide - Page 56
.... Press this key: When you want to specify.
Calculate 78 + 18 in octal. Convert the decimal value 3010 to binary. When inputting the.... k Negative Number Calculations and Logical Operations
To input a negative number calculation or logical operation command, press 13(BASE) to display page one of a bitwise XNOR
E-54 Transform the result of 3 using a different base.
Specifying...
User Guide - Page 66
... • VctB (Vector Dot Product) VctA × VctB (Vector Cross Product) Obtain the absolute values of gravitation; 40: standard atmosphere
E-64 You can use the vectors input in scientific calculations. Determine the size of the angle (angle unit: Deg) formed by
vectors A = (-1, 0, 1) and B = (1, 2, 0), and one of the size 1 vectors perpendicular to both A and...
User Guide - Page 68
... store lower calculation priority sequence ...a calculation contains a negative value, ...calculation results. Metric conversion commands: cm'in the same calculation. Statistical estimated value calculation... Stack Limitations
This calculator uses memory areas called stacks to be performed first, so the use of parentheses can ...before π, e, variables, scientific constants (2π, 5A, &#...
User Guide - Page 73
... contents and values assigned to variables to be able to use the calculator as long as there is present. E-71 Reference
k Power Requirements and Battery Replacement
Your calculator uses a TWO WAY POWER system that you are using the correct mode for the type of the calculator...
Normally, calculators equipped with G13 type button battery (LR44). When any...
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