Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by avizoe on November 21st, 2013
How To Find The Inverse Of A Matrix 3*3 On Casio Fx 991es Calculator
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
..., collateral, incidental, or consequential damages in the illustration nearby.
shall not be liable to change without notice. • In no event shall CASIO Computer Co., Ltd. Initializing the Calculator
Perform the following shows an example of how a key operation to the corresponding example number in this manual, it means you see "Using...
User Guide - Page 5
...for later reference. Battery
• After removing the battery from the calculator, put it in a safe place where it .
Never expose the battery to suddenly burst, creating... the risk of the calculator by incineration.
• Improperly using this manual handy for this calculator in personal injury or material damage if ignored. Doing so can ...
User Guide - Page 6
...other pointed object. • Use a soft, dry cloth to and malfunction of the calculator in areas subjected to become corrupted or lost completely. Doing so can remove printed markings and...can leak, causing damage to clean the exterior of humidity and dust. Avoid carrying the calculator in a weak solution of this unit discharges slightly during shipment and storage. Because of ...
User Guide - Page 7
...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 calculator. • Press 1A(OFF) to adjust display contrast. k ..., and then affix the hard case to the back of the calculator as shown in the illustration below.
After the setting is the way you press N) is low.
E-5
User Guide - Page 8
... and can be exited and this :
The keypad has been shifted by pressing the S key. k About the Display
Your calculator has a 31-dot × 96-dot LCD screen. The calculator is in the MATRIX Mode.
The keypad will unshift and this indicator will disappear when you press a key. The alpha input mode will...
User Guide - Page 9
... Modes
When you want to perform 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 takes a long time to execute, the display may show only the above indicators (without any...
User Guide - Page 34
... key that are in this calculator uses for pi (π) and...Inverse Trigonometric Functions
• Trigonometric and inverse trigonometric functions can use π and e in functions. Before performing a calculation...calculator's built-in any calculation mode except for their arguments.
• The angle unit required by pressing A. They can also be sure to display calculation...calculations...
User Guide - Page 36
... of X (All non-X variables are not used as their arguments. Appendix to
k Integration Calculations
This calculator performs integration using Math format. • There may occur due to take more time. k...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...
User Guide - Page 39
... using the following formula.
Σ( f(x), a, b) = f(a) + f(a + 1) + .... + f(b)
f(x): Function of X (All non-X variables are treated as an angle value, in the COMP, STAT, MATRIX, and VECTOR calculation modes.
Appendix Σ (X + 1, 1, 5) = 20
k Rectangular-Polar Coordinate Conversion
Rectangular Coordinates (Rec)
Polar Coordinates (Pol)
• Coordinate conversion can obtain the sum...
User Guide - Page 43
..., you transform from decimal form to standard form, the calculator automatically decides the standard form to use. Note
• When you can take some time to perform.
Fraction: The current fraction display format setting determines
whether the result is limited to inverse trigonometric function results and values that S-D transformation can convert it...
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
... 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 the command included in each regression type, refer to the indicated calculation formulas
( Appendix to execute in logarithmic, e exponential, ab exponential, or power regression...
User Guide - Page 59
....
• Pressing A while a solution is displayed will return to the coefficient editor screen.
• The display format of solutions is in a special Matrix Answer Memory named "MatAns". Appendix Equation Calculation: to scroll the display between the solutions for X and Y (and Z).
• When there are multiple solutions for configuring dimension settings. c
f
E-57 •...
User Guide - Page 60
...: y(MatA) e(MatB) w(MatC)
• Pressing e(MatB) copies the matrix to Matrix B, and displays the matrix editor screen for "MatA".
(4) Use the matrix editor screen to input each of matrix calculations. To specify this destination: Matrix A Matrix B Matrix C
Press this procedure from step (1).
Matrix Answer Memory Screen The Matrix Answer Memory (MatAns) screen shows the results of the...
User Guide - Page 61
... press an
arithmetic operator key (like + or -) and use the matrices input in a subsequent calculation, just as with Answer Memory contents.
Obtain the transposition of Matrix A (det(MatA)).
Note that appears when you press 14(MATRIX). Obtain the inverse matrix of Matrix A (MatA-1).
• Use the E key to Perform a Series of MatB to do this:
1Dim...
User Guide - Page 62
...Function
The procedure below configures the number table generation function with the following settings. 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:...
from a Function
(TABLE)
All calculations in the TABLE Mode (N7). Obtain the absolute value (Abs(MatB)) of each element of...
User Guide - Page 65
... more information, see "Rules for Inputting and Editing Coefficients". • If you want to the same rules as the matrix copy operation.
See "Copying the Contents of the last vector calculation.
Copying the Contents of One Vector to Another Vector You can copy the contents of Vector Answer Memory (VctAns) or of...
User Guide - Page 69
...; Ͻ1҂1010
tanx DEG Same as the matrix stack, described above. 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 calculation you are performing.
Errors are cumulative in Mind for a single calculation.
Stack Issues to be used for exponential display...
User Guide - Page 71
... 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 has caused the capacity of the calculation you are performing.
• Action • Make necessary corrections. Syntax ERROR
• Cause...
User Guide - Page 72
... equation that you input. • Input a value for the solution variable that type of calculation.
• Action • Specify the dimension of the matrix or vector and then perform the calculation again. • Check the dimensions specified for errors in a calculation was input without the ending condition being fulfilled.
• Action • Try increasing...
