Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by kivkerobin on December 3rd, 2013
How To Determine Matrix By Fx-991es
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Related Casio FX-991ES Manual Pages
User Guide - Page 8
... disappear when you press a key. The default angle unit is selected as the input/output format. Math style is radians. E-6 The calculator is in the MATRIX Mode. The calculator is in independent memory. Calculation history memory data is available and can be exited and this indicator will be replayed, or there is grads. The...
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 corresponds to the mode you want to select. • To select the CMPLX Mode, for example...
User Guide - Page 11
...procedure to turn display of the frequency (FREQ) column of the two available settings (Norm1, Norm2) determines the range in which results will be displayed in nonexponential format.
E-9 Norm1: 10-2 > ... is applied for input values is always a dot ( ). The decimal point for calculation results
.
Outside the specified range, results are displayed using exponential format. • ...
User Guide - Page 32
... b = -2. Current value of Y
Math
0=
Math
1=
Math
y2=
Current value of the solution variable. E-30 Precautions when Using SOLVE • SOLVE may not be able to determine the correct solution, even when one exists.
k Example SOLVE Operation Example: To solve y = ax2 + b for Y.
If this happens, try changing the initial value of the...
User Guide - Page 34
... number key that are not used in the COMP, STAT, EQN, MATRIX, TABLE, and VECTOR calculation modes. Before performing a calculation, be used for their arguments.
• The angle unit required by...8226; You can input pi (π) or natural logarithm base e into a calculation. The following shows the required key operations and the values this section show operation in the COMP Mode...
User Guide - Page 36
... (All non-X variables are not used as their arguments.
Appendix to
k Integration Calculations
This calculator performs integration using Math format. • There may be large error in obtained integration... 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 38
... can be caused by approximating the derivative based on centered difference approximation. inclusion of the tolerance range. differential calculation results approaching zero • Pressing A will interrupt an ongoing differential calculation. Appendix Determine f '( π ) when f(x) = sin(x)
2 (tol specification omitted.)
d (3x2 - 5x + 2, 2, 1×10-12) = 7 dx
E-36 A default value
of...
User Guide - Page 39
... 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 Σ calculation.
Converting to Polar Coordinates (Pol) Pol(X, Y) X: Specifies the rectangular coordinate X value
Y: Specifies the rectangular...
User Guide - Page 43
Fraction: The current fraction display format setting determines
whether the result is limited to inverse trigonometric function results and values that are supported....are the π forms that S-D transformation can convert it cannot be converted to ' form. When the original calculation result is true only in decimal form, it to decimal form by pressing the f key. Examples of the...
User Guide - Page 45
...can use the following operation to obtain a conjugate complex number. 12(CMPLX)2(Conjg)
Appendix Determine the conjugate of -180°< θ < 180°.
Example 2: '2 ∠ 45 = 1 + i
(Angle Unit: Deg)
MATH
CMPLX
Math
!2e1y(∠)45=
Examples of Calculation Results Using Polar
Coordinate Format (r ∠ θ)
Example 1: 2 × ('3 + i) = 2'3 + 2i = 4 ∠ 30
(Angle Unit...
User Guide - Page 59
... an equation solution is in the MATRIX Mode (N6). Appendix Equation Calculation: to
Matrix Calculations (MATRIX)
You can use f and c to switch the display between X1, X2, and X3.
c
f
E-57 k Creating and Managing a Matrix Creating a Matrix and Storing It in Matrix Memory
(1) In the MATRIX Mode, press 14(MATRIX)1(Dim). • This displays the matrix selection screen.
• Note that...
User Guide - Page 60
... is on the display.
(3) Specify the destination of matrix calculations. k Performing Matrix Calculations
Pressing A while the matrix selection screen or matrix editor screen is subject to the matrix calculation screen. (3) Press a number key (1 through 6) to specify the matrix dimension you want to copy Matrix A, for example, press 14(MATRIX)
2(Data)1(MatA).
(2) Press 1t(STO). • This...
User Guide - Page 61
... Input "MatB"
5MatC Input "MatC"
6MatAns Input "MatAns"
7det
Input the "det(" function for obtaining the determinant
8Trn
Input the "Trn(" function for this input.
Obtain the inverse matrix of Matrix A (MatA-1).
• Use the E key to Perform a Series of Calculations". For more information, see "Using Answer Memory to input "-1". Obtain the transposition of...
User Guide - Page 62
...section are performed in this example.
Generating a Number Table
from a Function
(TABLE)
All calculations in the TABLE Mode (N7). k Configuring a Number Table Generation Function
The procedure below ...)) of each element of Matrix A.
• Use w to specify squaring, and 1w(x3) to specify the initial start value input screen. Determine the square (MatA2) or cube (MatA3)...
User Guide - Page 65
... of a vector
E-63
Copying the Contents of One Vector to the vector calculation screen, press A.
k Performing Vector Calculations
To perform a vector calculation, display the vector calculation screen by pressing the A key. Select this procedure from step (1). See "Copying the Contents of One Matrix to create another vector in vector memory to another vector, repeat this...
User Guide - Page 66
...(Vector Addition) 3 × VctA (Vector Scalar Multiplication)
VctB - 3 × VctA (Calculation example using VctAns) VctA • VctB (Vector Dot Product) VctA × VctB (Vector ...Cross Product) Obtain the absolute values of gravitation; 40: standard atmosphere
E-64 Determine the size of the angle (angle unit: Deg) formed by
vectors A = (-1, 0, 1) and B =...
User Guide - Page 69
...; x Ϲ4.999999999҂1099
E-67
The vector stack has five levels.
Calculation Range and Precision
Calculation Range
±1 × 10-99 to be exceeded.
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 used in the case...
User Guide - Page 71
... are 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. Syntax ERROR
• Cause • There is a problem with the argument of the...
User Guide - Page 72
... the matrices or vectors to see if they are trying to perform a calculation 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 is...
Appendix - Page 43
#104
MAT
1w(Abs)14(MATRIX) 4(MatB))
MAT
=
#105
MAT
14(MATRIX)3(MatA)w
MAT
=
MAT
14(MATRIX)3(MatA) 1w(x3)
MAT
=
#106
VCT
N8(VECTOR) 1(VctA)2(2)1= 2=
A15(VECTOR)1(Dim)
VCT
3(VctC)1(3)2=
y1= 2=
-42-
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