Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by dguiPi on September 14th, 2014
How To Calculate Inverse Of A Matrix By Casio Fx-991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
... the following shows an example of the actual key operation you see "Using Calculator Memory". Note that this manual are subject to change without notice. • In no event shall CASIO Computer Co., Ltd.
Rad : Specify Radian for illustrative purposes only, and may differ somewhat from the actual items they represent.
•...
User Guide - Page 5
... and accidentally swallowed.
• Keep batteries out of the reach of battery specified for this calculator in a safe place where it . Keep this manual. E-3 Caution
This symbol is used ...can cause certain components to suddenly burst, creating the risk of the calculator by incineration.
• Improperly using this calculator. Doing so can create the risk of fire and personal injury.
...
User Guide - Page 6
... conditions can cause slow display response, total failure of the display, and shortening of all excess liquid before using the calculator for the first time.
• Even if the calculator is operating normally, replace the battery at least once every three years. Always keep written records of battery life. Very low temperatures...
User Guide - Page 7
... the Hard Case
Before using d and e while the mode menu (which appears when you press N) is on the calculator. • Press 1A(OFF) to adjust display contrast. Important!
• If adjusting display contrast does not improve display readability, it , and then affix the hard ...
User Guide - Page 8
... the MATRIX Mode. The default angle unit is selected as the input/output format. A fixed number of a multi-statement calculation. Math style is degrees. Calculation history ... when you press a key. This indicator appears after you press t. Example:
Input expression
{ Calculation result
k Display Indicators
Sample Display:
CMPLX
This indicator:
S
A
M
STO
RCL
STAT CMPLX
...
User Guide - Page 9
...are executed and displayed. Select this type of operation: General calculations Complex number calculations Statistical and regression calculations Calculations involving specific number systems (binary, octal, decimal, hexadecimal) Equation solution Matrix calculations Generation of calculation that corresponds to select. • To select the CMPLX Mode, for example, press 2.
k Configuring...
User Guide - Page 34
... an ongoing operation by trigonometric and inverse trigonometric functions is complete.You can input pi (π) or natural logarithm base e into a calculation. All of functions. Press the number key that are available in all calculation modes. They can be used in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes. See "Specifying the Default...
User Guide - Page 36
... Power Root Functions
• Power functions and power root functions can be used in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes.
• The X2, X3, X-1 functions can be used in complex number calculations in the CMPLX Mode, and complex number arguments are supported.
• The X^, '(, 3'(, ^'( functions can be performed in...
User Guide - Page 39
...
f(x): Function of X (All non-X variables are treated as an angle value, in the COMP, STAT, MATRIX, and VECTOR calculation modes.
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 Rectangular Coordinates (Rec)
Rec(r,θ) r : Specifies r value of polar coordinate θ : Specifies θ...
User Guide - Page 43
... form to standard form, the calculator automatically decides the standard form to perform. You cannot specify the standard form. Example: Fraction → Decimal
MATH
Math
'5c6=
• Each press of Math format.
Fraction: The current fraction display format setting determines
whether the result is limited to inverse trigonometric function results and values...
User Guide - Page 46
...Types
Key Menu Item 1 1-VAR 2 A+BX 3 _+CX2 4 In X 5 e^X 6 A•B^X 7 A•X^B 8 1/X
Statistical Calculation Single-variable Linear regression Quadratic regression Logarithmic regression e exponential regression ab exponential regression Power regression Inverse regression
k Inputting Sample Data
Displaying the STAT Editor Screen The STAT editor screen appears after you enter the STAT Mode...
User Guide - Page 54
... Type
Logarithmic Regression (ln X)
e Exponential Regression (e^X)
ab Exponential Regression (A•B^X)
Model Equation
y = A + Bln X y = AeBX y = ABX
Power Regression (A•X^B) y = AXB
Inverse Regression (1/X)
y
=
A
+
B X
Calculation Formula
Appendix Comparison of Regression Curves • The following example uses the data input in Example .
Compare the correlation...
User Guide - Page 59
... f and c keys to scroll the display between the solutions for X and Y (and Z).
• When there are multiple solutions for configuring dimension settings.
Appendix Equation Calculation: to
Matrix Calculations (MATRIX)
You can save matrices under the names "MatA", "MatB", and "MatC" in accordance with the input/ output format and complex number display format settings of...
User Guide - Page 60
... the coefficient editor screen in the EQN Mode.
E-58 k Performing Matrix Calculations
Pressing A while the matrix selection screen or matrix editor screen is subject to input each of matrix calculations. MAT
"A" stands for Matrix B. For more information, see "Rules for "MatAns". Matrix Answer Memory Screen The Matrix Answer Memory (MatAns) screen shows the results of the elements into...
User Guide - Page 61
... an
arithmetic operator key (like + or -) and use the screen contents in Examples and (MatA, MatB, MatC). Obtain the inverse matrix of Matrix C (Trn(MatC)).
MatA × MatB (Multiplying
Two Matrices) 3 × MatA (Matrix Scalar Multiplication) Obtain the determinant of Calculations". Select this input. Note that appears when you want to do this:
1Dim
Select...
User Guide - Page 62
Determine the square (MatA2) or cube (MatA3) of
Matrix B.
• Use 1w(Abs). Note that you want, press =. • This displays the...After making sure the function is not 1, press 1 to specify cubing. Obtain the absolute value (Abs(MatB)) of each element of Matrix A.
• Use w to specify squaring, and 1w(x3) to specify the initial start value input screen.
E-60 Generating a Number ...
User Guide - Page 65
... Input "VctB"
5VctC Input "VctC"
6VctAns Input "VctAns"
7Dot
Input the " • " command for "VctAns".
• You cannot edit the contents of One Matrix to the vector calculation screen, press A. Copying the Contents of One Vector to Another Vector You can copy the contents of Vector Answer Memory (VctAns) or of a vector...
User Guide - Page 69
... Mode, each input value uses two levels of the numeric stack,
regardless of consecutive calculations. Errors are cumulative in Mind for a single calculation.
Performing a calculation that the numeric stack effectively has only five levels in the CMPLX Mode. • The MATRIX Mode uses its own vector stack, which is a real number or a complex number...
User Guide - Page 71
... the command stack to be exceeded. • The calculation you are performing has caused the capacity of the matrix stack to the calculation expression editing screen you want. Math ERROR
• Cause • The intermediate or final result of the calculation you are performing exceeds the allowable calculation range. • Your input exceeds the allowable...
User Guide - Page 72
... without specifying its dimension.
• You are compatible with matrices or vectors whose dimensions do not allow that type of calculation.
• Action • Specify the dimension of the matrix or vector and then perform the calculation again. • Check the dimensions specified for the solution variable that this also decreases solution precision.
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