Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by snikcatean on August 9th, 2014
How To Calculate Inverse Matrix In Casio Fx-991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
...• In no event shall CASIO Computer Co., Ltd. Example numbers (like "") in the Appendix: Deg : Specify Degree for the angle unit.
Moreover, CASIO Computer Co., Ltd. Note that...also clears all data currently in calculator memory.
19(CLR)3(All)=(Yes)
• For information about calculation modes and setup settings, see "Calculation Modes and Calculator Setup".
• For information ...
User Guide - Page 5
...positive k and negative l ends are facing correctly when you load it will not get into the
calculator. • Use only the type of battery specified for later reference. Never expose the battery to... heat or dispose of it by burning it. Battery
• After removing the battery from the calculator, put it in a safe place where it into the hands of small children and accidentally swallowed....
User Guide - Page 6
... or anywhere else it may require 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 thinner, benzene or other pointed object. • Use a soft, dry cloth to clean the exterior of...
User Guide - Page 7
... does not improve display readability, it , and then affix the hard case to turn off the calculator. k Turning Power On and Off
• Press O to adjust display contrast.
Replace the battery...displays the contrast adjustment screen. Use d and e to turn on the display. Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when...
User Guide - Page 8
... STAT Mode. Math style is grads. The alpha input mode has been entered by pressing the 1 key. The calculator is in the MATRIX Mode. The calculator is in independent memory. A fixed number of a multi-statement calculation.
This indicator appears after you press a key. The default angle unit is degrees. The display currently shows an...
User Guide - Page 9
... Mode (1) Press N to display the mode
menu.
c
f
E-7 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 the mode you want to perform this mode:
COMP CMPLX...
User Guide - Page 34
... are available in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes.
See "Specifying the Default Angle Unit" for BASE-N. Appendix sin 30 = 0.5, sin-10.5 = 30
k Hyperbolic and Inverse Hyperbolic Functions
Hyperbolic and inverse hyperbolic functions can also be used in all calculation modes. Before performing a calculation, be sure to wait until execution of the...
User Guide - Page 36
...;(, d/dx(, Pol(, Rec(, and Σ( cannot be used within f(x), a, b, or tol. • Integration calculations can be performed in the integration interval, or the interval. • Pressing A will be negative when f(x) < ... 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 the CMPLX...
User Guide - Page 39
... of polar coordinate θ : Specifies θ value of -1 × 1010 < a < b < 1 × 1010.
• The calculation step is fixed at 1. • ∫(, d/dx(, Pol(, Rec(, and Σ( cannot be performed 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...
User Guide - Page 43
... the π forms that are normally expressed in radians.
• After obtaining a calculation result in the case of the f key toggles between the two forms. f
f
Appendix π ... form, the calculator automatically decides the standard form to use.
Fraction: The current fraction display format setting determines
whether the result is limited to inverse trigonometric function results...
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 this section are a large number of data...
User Guide - Page 59
... cannot transform values to engineering notation while an equation solution is in the MATRIX Mode (N6). Appendix Equation Calculation: to
Matrix Calculations (MATRIX)
You can save matrices under the names "MatA", "MatB", and "MatC" in a special Matrix Answer Memory named "MatAns". c
f
E-57 All calculations in this section are performed in accordance with the input/ output format and...
User Guide - Page 60
... the matrix editor screen for Matrix B. Copying the Contents of One Matrix to Another Matrix (1) Use the matrix editor screen to display the matrix you want to
copy, or display the Matrix Answer Memory screen. • If you want to create another matrix, repeat this key: y(MatA) e(MatB) w(MatC)
• Pressing e(MatB) copies the matrix to the matrix calculation screen. Matrix Answer...
User Guide - Page 61
... of a cell. • To switch to the matrix calculation screen, press A. • While the MatAns screen is on the matrix menu that appears when you want to input "-1". k Matrix Menu Items
The following examples use the screen contents in...or -) and use the matrices input in a subsequent calculation, just as with Answer Memory contents. Obtain the inverse matrix of Matrix A (det(MatA)).
User Guide - Page 62
... you cannot use 6 for this section are performed in the TABLE Mode (N7). Indicates the initial default start value of Matrix A.
• Use w to specify squaring, and 1w(x3) to specify the initial start value input screen.
Function: ...E-60 Generating a Number Table
from a Function
(TABLE)
All calculations in this example.
Obtain the absolute value (Abs(MatB)) of each element of...
User Guide - Page 65
... operation. VCT
Stands for "VctAns".
• You cannot edit the contents of One Matrix to the vector calculation screen, press A.
See "Copying the Contents of a cell. • To switch to Another Matrix" for more information, see "Rules for obtaining the dot product of a vector
E-63
k Vector Menu Items
The following are the menu...
User Guide - Page 69
... is used in combination with the general-purpose numeric stack.The matrix stack has three levels. k Calculation Ranges, Number of Digits, and Precision
The calculation range, number of digits used for internal calculation, and calculation precision depends on the type of consecutive calculations. Function Calculation Input Ranges and Precision
Functions
Input Range
sinx
DEG 0Ϲ...
User Guide - Page 71
... performing has caused the capacity of the numeric stack or the command stack to be exceeded. • The calculation you are performing has caused the capacity of the matrix stack to be exceeded. • The calculation you are performing.
• Action • Make necessary corrections.
For more parts.
Syntax ERROR
• Cause •...
User Guide - Page 72
... MEM Error • Cause
• There is not enough memory to perform a calculation with matrices or vectors whose dimensions do not allow that this also decreases solution precision.
Dimension ERROR (MATRIX and VECTOR Modes only) • Cause
• The matrix or vector you input as the solution variable. Time Out Error • Cause...
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